In the Linux kernel, the following vulnerability has been resolved: smb: server: fix active_num_conn leak on transport allocation failure Commit 77ffbcac4e56 ("smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()") addressed the kthread_run() failure path. The earlier alloc_transport() == NULL path in the same function has the same leak, is reachable pre-authentication via any TCP connect to port 445, and was empirically reproduced on UML (ARCH=um, v7.0-rc7): a small number of forced allocation failures were sufficient to put ksmbd into a state where every subsequent connection attempt was rejected for the remainder of the boot. ksmbd_kthread_fn() increments active_num_conn before calling ksmbd_tcp_new_connection() and discards the return value, so when alloc_transport() returns NULL the socket is released and -ENOMEM returned without decrementing the counter. Each such failure permanently consumes one slot from the max_connections pool; once cumulative failures reach the cap, atomic_inc_return() hits the threshold on every subsequent accept and every new connection is rejected. The counter is only reset by module reload. An unauthenticated remote attacker can drive the server toward the memory pressure that makes alloc_transport() fail by holding open connections with large RFC1002 lengths up to MAX_STREAM_PROT_LEN (0x00FFFFFF); natural transient allocation failures on a loaded host produce the same drift more slowly. Mirror the existing rollback pattern in ksmbd_kthread_fn(): on the alloc_transport() failure path, decrement active_num_conn gated on server_conf.max_connections. Repro details: with the patch reverted, forced alloc_transport() NULL returns leaked counter slots and subsequent connection attempts -- including legitimate connects issued after the forced-fail window had closed -- were all rejected with "Limit the maximum number of connections". With this patch applied, the same connect sequence produces no rejections and the counter cycles cleanly between zero and one on every accept.

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8876-1 advisory.

    It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory     allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could     possibly use this to cause a denial of service (system crash). (CVE-2022-3114)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - ARM32 architecture;

    - ARM64 architecture;

    - MIPS architecture;

    - PowerPC architecture;

    - RISC-V architecture;

    - User-Mode Linux (UML);

    - x86 architecture;

    - Block layer subsystem;

    - Cryptographic API;

    - ACPI drivers;

    - Android drivers;

    - Serial ATA and Parallel ATA drivers;

    - Drivers core;

    - DRBD Distributed Replicated Block Device drivers;

    - Rados block device (RBD) driver;

    - Bluetooth drivers;

    - Cdrom driver;

    - Character device driver;

    - Hardware random number generator core;

    - TPM device driver;

    - Data acquisition framework and drivers;

    - CPU frequency scaling framework;

    - Hardware crypto device drivers;

    - DAX dirext access to differentiated memory framework;

    - DMA engine subsystem;

    - FireWire subsystem;

    - Arm Firmware Framework for ARMv8-A(FFA);

    - Intel Stratix 10 firmware drivers;

    - GPIO subsystem;

    - GPU drivers;

    - HID subsystem;

    - Hardware monitoring drivers;

    - Intel Trace Hub HW tracing drivers;

    - I2C subsystem;

    - IIO subsystem;

    - IIO ADC drivers;

    - IIO Magnetometer sensors drivers;

    - InfiniBand drivers;

    - Input Device core drivers;

    - Input Device (Miscellaneous) drivers;

    - Input Device (Mouse) drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - LED subsystem;

    - Multiple devices driver;

    - Media drivers;

    - MemoryStick subsystem;

    - Multifunction device drivers;

    - Fastrpc Driver;

    - MTD block device drivers;

    - Network drivers;

    - Mellanox network drivers;

    - Microsoft Azure Network Adapter (MANA) driver;

    - Texas Instruments network drivers;

    - MediaTek network drivers;

    - NTB driver;

    - NVDIMM (Non-Volatile Memory Device) drivers;

    - NVME drivers;

    - PCI subsystem;

    - Pin controllers subsystem;

    - Generic PM domains;

    - Power supply drivers;

    - Voltage and Current Regulator drivers;

    - Reset controller framework;

    - S/390 drivers;

    - SCSI subsystem;

    - SLIMbus drivers;

    - SPI subsystem;

    - Media staging drivers;

    - Media Oriented Systems Transport (MOST) driver;

    - NVIDIA Tegra embedded controller (NVEC) staging driver;

    - Realtek RTL8723BS SDIO drivers;

    - TCM subsystem;

    - Trusted Execution Environment drivers;

    - Thermal drivers;

    - Thunderbolt and USB4 drivers;

    - USB DSL drivers;

    - Cadence USB3 driver;

    - ULPI bus;

    - DesignWare USB3 driver;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - USB ChaosKey driver;

    - Siemens ID Mouse USB driver;

    - IOWarrior USB driver;

    - LD Didactic USB driver;

    - LEGO USB Tower driver;

    - USS720 USB parallel port adapter driver;

    - MediaTek USB3 DRD driver;

    - USB Serial drivers;

    - USB Type-C Port Controller Manager driver;

    - USB Type-C Connector System Software Interface driver;

    - USB over IP driver;

    - vDPA drivers;

    - VFIO drivers;

    - Virtio Host (VHOST) subsystem;

    - Framebuffer layer;

    - Watchdog drivers;

    - Xen hypervisor drivers;

    - AFS file system;

    - File systems infrastructure;

    - BTRFS file system;

    - Ceph distributed file system;

    - EROFS file system;

    - exFAT file system;

    - Ext4 file system;

    - F2FS file system;

    - FUSE (File system in Userspace);

    - HFS file system;

    - HFS+ file system;

    - Journaling layer for block devices (JBD2);

    - Network file system (NFS) client;

    - Network file system (NFS) server daemon;

    - NILFS2 file system;

    - NTFS3 file system;

    - OCFS2 file system;

    - OrangeFS file system;

    - Proc file system;

    - SMB network file system;

    - UDF file system;

    - XFS file system;

    - Software nodes and device properties;

    - Glob pattern matching library;

    - Netfilter;

    - Socket messages infrastructure;

    - Network sockets;

    - Memory Management;

    - Network traffic control;

    - IPv6 networking;

    - Bluetooth subsystem;

    - Networking core;

    - IP tunnels definitions;

    - IPv4 networking;

    - SCTP protocol;

    - XFRM subsystem;

    - io_uring subsystem;

    - IPC subsystem;

    - Audit subsystem;

    - BPF subsystem;

    - Control group (cgroup);

    - Kernel CPU control infrastructure;

    - Kernel exit() syscall;

    - Kernel futex primitives;

    - Scheduler infrastructure;

    - Signal handling mechanism;

    - Timer subsystem;

    - Tracing infrastructure;

    - Cryptographic library;

    - Debug objects infrastructure;

    - Resizable hashtable library;

    - Memory management;

    - 6LoWPAN network protocol;

    - IEEE 802 network protocols;

    - 9P file system network protocol;

    - Asynchronous Transfer Mode (ATM) subsystem;

    - B.A.T.M.A.N. meshing protocol;

    - Ethernet bridge;

    - CAN network layer;

    - Ceph Core library;

    - HSR network protocol;

    - IEEE802154.4 network protocol;

    - IFE protocol;

    - IUCV driver;

    - KCM (Kernel Connection Multiplexor) sockets driver;

    - Logical Link layer;

    - MAC80211 subsystem;

    - IEEE 802.15.4 subsystem;

    - Management Component Transport Protocol (MCTP);

    - MultiProtocol Label Switching driver;

    - NetLabel subsystem;

    - Open vSwitch;

    - Packet sockets;

    - Phonet protocol;

    - Packet sampling (psample);

    - Qualcomm IPC Router (QRTR);

    - RDS protocol;

    - SMC sockets;

    - Sun RPC protocol;

    - TIPC protocol;

    - TLS protocol;

    - Unix domain sockets;

    - VMware vSockets driver;

    - Wireless networking;

    - X.25 network layer;

    - AppArmor security module;

    - Integrity Measurement Architecture(IMA) framework;

    - Key management;

    - Apple Onboard Audio ALSA driver;

    - ALSA framework;

    - Generic PCM loopback sound driver;

    - FireWire sound drivers;

    - ESS Solo-1 ALSA driver;

    - HD-audio driver;

    - SoC Audio for Freescale CPUs drivers;

    - NVIDIA Tegra ASoC drivers;

    - USB sound devices;

    - Perf tools;

    - KVM subsystem; (CVE-2023-54125, CVE-2023-54271, CVE-2025-22026, CVE-2025-23131, CVE-2025-39863,     CVE-2025-39929, CVE-2025-39931, CVE-2026-23364, CVE-2026-31449, CVE-2026-31451, CVE-2026-31610,     CVE-2026-31700, CVE-2026-31708, CVE-2026-31709, CVE-2026-31711, CVE-2026-31712, CVE-2026-31715,     CVE-2026-43064, CVE-2026-43216, CVE-2026-43219, CVE-2026-43350, CVE-2026-43355, CVE-2026-43491,     CVE-2026-43492, CVE-2026-45850, CVE-2026-45930, CVE-2026-45991, CVE-2026-45999, CVE-2026-46003,     CVE-2026-46021, CVE-2026-46026, CVE-2026-46038, CVE-2026-46052, CVE-2026-46056, CVE-2026-46065,     CVE-2026-46069, CVE-2026-46078, CVE-2026-46086, CVE-2026-46090, CVE-2026-46091, CVE-2026-46092,     CVE-2026-46103, CVE-2026-46116, CVE-2026-46159, CVE-2026-46160, CVE-2026-46169, CVE-2026-46180,     CVE-2026-46191, CVE-2026-46193, CVE-2026-46196, CVE-2026-46208, CVE-2026-46252, CVE-2026-46291,     CVE-2026-46292, CVE-2026-46299, CVE-2026-46320, CVE-2026-46321, CVE-2026-46322, CVE-2026-52909,     CVE-2026-52910, CVE-2026-52913, CVE-2026-52917, CVE-2026-52918, CVE-2026-52923, CVE-2026-52927,     CVE-2026-52928, CVE-2026-52929, CVE-2026-52930, CVE-2026-52933, CVE-2026-52934, CVE-2026-52935,     CVE-2026-52939, CVE-2026-52942, CVE-2026-52943, CVE-2026-52947, CVE-2026-52948, CVE-2026-52977,     CVE-2026-53080, CVE-2026-53090, CVE-2026-53133, CVE-2026-53134, CVE-2026-53135, CVE-2026-53136,     CVE-2026-53137, CVE-2026-53138, CVE-2026-53139, CVE-2026-53146, CVE-2026-53148, CVE-2026-53149,     CVE-2026-53150, CVE-2026-53157, CVE-2026-53158, CVE-2026-53159, CVE-2026-53161, CVE-2026-53167,     CVE-2026-53168, CVE-2026-53177, CVE-2026-53181, CVE-2026-53189, CVE-2026-53194, CVE-2026-53195,     CVE-2026-53196, CVE-2026-53199, CVE-2026-53208, CVE-2026-53213, CVE-2026-53217, CVE-2026-53218,     CVE-2026-53219, CVE-2026-53223, CVE-2026-53227, CVE-2026-53238, CVE-2026-53239, CVE-2026-53245,     CVE-2026-53249, CVE-2026-53252, CVE-2026-53253, CVE-2026-53254, CVE-2026-53255, CVE-2026-53256,     CVE-2026-53263, CVE-2026-53264, CVE-2026-53265, CVE-2026-53266, CVE-2026-53268, CVE-2026-53269,     CVE-2026-53270, CVE-2026-53273, CVE-2026-53275, CVE-2026-53325, CVE-2026-53332, CVE-2026-53392,     CVE-2026-53393, CVE-2026-53399, CVE-2026-53400, CVE-2026-53402, CVE-2026-63806, CVE-2026-63810,     CVE-2026-63815, CVE-2026-63817, CVE-2026-63818, CVE-2026-63827, CVE-2026-63828, CVE-2026-63829,     CVE-2026-63830, CVE-2026-64187, CVE-2026-64189, CVE-2026-64206, CVE-2026-64266, CVE-2026-64268,     CVE-2026-64269, CVE-2026-64271, CVE-2026-64273, CVE-2026-64274, CVE-2026-64275, CVE-2026-64276,     CVE-2026-64277, CVE-2026-64279, CVE-2026-64296, CVE-2026-64298, CVE-2026-64299, CVE-2026-64301,     CVE-2026-64303, CVE-2026-64304, CVE-2026-64306, CVE-2026-64312, CVE-2026-64313, CVE-2026-64315,     CVE-2026-64316, CVE-2026-64317, CVE-2026-64318, CVE-2026-64322, CVE-2026-64323, CVE-2026-64324,     CVE-2026-64329, CVE-2026-64330, CVE-2026-64331, CVE-2026-64332, CVE-2026-64333, CVE-2026-64334,     CVE-2026-64335, CVE-2026-64336, CVE-2026-64337, CVE-2026-64338, CVE-2026-64340, CVE-2026-64342,     CVE-2026-64343, CVE-2026-64344, CVE-2026-64346, CVE-2026-64347, CVE-2026-64350, CVE-2026-64351,     CVE-2026-64352, CVE-2026-64355, CVE-2026-64359, CVE-2026-64360, CVE-2026-64361, CVE-2026-64362,     CVE-2026-64363, CVE-2026-64364, CVE-2026-64370, CVE-2026-64371, CVE-2026-64372, CVE-2026-64373,     CVE-2026-64374, CVE-2026-64375, CVE-2026-64379, CVE-2026-64380, CVE-2026-64381, CVE-2026-64390,     CVE-2026-64401, CVE-2026-64403, CVE-2026-64408, CVE-2026-64411, CVE-2026-64412, CVE-2026-64413,     CVE-2026-64420, CVE-2026-64422, CVE-2026-64423, CVE-2026-64425, CVE-2026-64428, CVE-2026-64429,     CVE-2026-64430, CVE-2026-64432, CVE-2026-64435, CVE-2026-64436, CVE-2026-64438, CVE-2026-64440,     CVE-2026-64441, CVE-2026-64442, CVE-2026-64443, CVE-2026-64444, CVE-2026-64445, CVE-2026-64446,     CVE-2026-64448, CVE-2026-64450, CVE-2026-64452, CVE-2026-64454, CVE-2026-64455, CVE-2026-64456,     CVE-2026-64461, CVE-2026-64462, CVE-2026-64465, CVE-2026-64468, CVE-2026-64469, CVE-2026-64470,     CVE-2026-64471, CVE-2026-64475, CVE-2026-64478, CVE-2026-64483, CVE-2026-64484, CVE-2026-64487,     CVE-2026-64488, CVE-2026-64494, CVE-2026-64495, CVE-2026-64496, CVE-2026-64497, CVE-2026-64500,     CVE-2026-64503, CVE-2026-64504, CVE-2026-64505, CVE-2026-64510, CVE-2026-64512, CVE-2026-64514,     CVE-2026-64530, CVE-2026-64532, CVE-2026-64533, CVE-2026-64534, CVE-2026-64535, CVE-2026-64536,     CVE-2026-64537, CVE-2026-64538, CVE-2026-64540, CVE-2026-64541, CVE-2026-64543, CVE-2026-64544,     CVE-2026-64545, CVE-2026-64546, CVE-2026-64547, CVE-2026-64548, CVE-2026-64549, CVE-2026-64550,     CVE-2026-64551, CVE-2026-64553, CVE-2026-64554, CVE-2026-64560, CVE-2026-64562, CVE-2026-64563,     CVE-2026-64564, CVE-2026-64565, CVE-2026-64567, CVE-2026-64569, CVE-2026-64571, CVE-2026-64572,     CVE-2026-64573, CVE-2026-64576, CVE-2026-64578, CVE-2026-64579, CVE-2026-64582, CVE-2026-64583,     CVE-2026-64584, CVE-2026-64593, CVE-2026-64594, CVE-2026-64599, CVE-2026-64600, CVE-2026-64602,     CVE-2026-64604, CVE-2026-68088, CVE-2026-68090, CVE-2026-68091, CVE-2026-68104, CVE-2026-68106,     CVE-2026-68111, CVE-2026-68115, CVE-2026-68117, CVE-2026-68121, CVE-2026-68123, CVE-2026-68125,     CVE-2026-68127, CVE-2026-68129, CVE-2026-68131, CVE-2026-68135, CVE-2026-68137, CVE-2026-68140,     CVE-2026-68141, CVE-2026-68142, CVE-2026-68143, CVE-2026-68144, CVE-2026-68151, CVE-2026-68153,     CVE-2026-68154, CVE-2026-68155, CVE-2026-68156, CVE-2026-68157, CVE-2026-68158, CVE-2026-68160,     CVE-2026-68175, CVE-2026-68176, CVE-2026-68180, CVE-2026-68182, CVE-2026-68183, CVE-2026-68184,     CVE-2026-68186, CVE-2026-68187, CVE-2026-68188, CVE-2026-68190, CVE-2026-68192, CVE-2026-68195,     CVE-2026-68196, CVE-2026-68197, CVE-2026-68199, CVE-2026-68204, CVE-2026-68209, CVE-2026-68212,     CVE-2026-68213, CVE-2026-68214, CVE-2026-68215, CVE-2026-68216, CVE-2026-68217, CVE-2026-68218,     CVE-2026-68222, CVE-2026-68223, CVE-2026-68226, CVE-2026-68227, CVE-2026-68229, CVE-2026-68231,     CVE-2026-68234, CVE-2026-68243, CVE-2026-68244, CVE-2026-68248, CVE-2026-68249, CVE-2026-68250,     CVE-2026-68284, CVE-2026-68294, CVE-2026-68297, CVE-2026-68299, CVE-2026-68300, CVE-2026-68301,     CVE-2026-68304, CVE-2026-68309, CVE-2026-68313, CVE-2026-68315, CVE-2026-68320, CVE-2026-68322,     CVE-2026-68324, CVE-2026-68325, CVE-2026-68326, CVE-2026-68327, CVE-2026-68328, CVE-2026-68331,     CVE-2026-68333, CVE-2026-68335, CVE-2026-68338, CVE-2026-68340, CVE-2026-68349, CVE-2026-68350,     CVE-2026-68351, CVE-2026-68352, CVE-2026-68353, CVE-2026-68354, CVE-2026-68355, CVE-2026-68357,     CVE-2026-68360, CVE-2026-68361, CVE-2026-68363, CVE-2026-68365, CVE-2026-68366, CVE-2026-68368,     CVE-2026-68369, CVE-2026-68370, CVE-2026-68373, CVE-2026-68376, CVE-2026-68377, CVE-2026-68388,     CVE-2026-68395, CVE-2026-68397, CVE-2026-68398, CVE-2026-68402, CVE-2026-68403, CVE-2026-68405,     CVE-2026-68406, CVE-2026-68410, CVE-2026-68411, CVE-2026-68413, CVE-2026-68414, CVE-2026-68417,     CVE-2026-68422, CVE-2026-68425, CVE-2026-68428, CVE-2026-68430, CVE-2026-68432, CVE-2026-68433,     CVE-2026-68444, CVE-2026-68446, CVE-2026-68449, CVE-2026-68450, CVE-2026-68451, CVE-2026-68452,     CVE-2026-68456, CVE-2026-68459, CVE-2026-68460, CVE-2026-68461, CVE-2026-68466, CVE-2026-68467,     CVE-2026-68469, CVE-2026-68474, CVE-2026-68475, CVE-2026-68477, CVE-2026-68478, CVE-2026-68479,     CVE-2026-68480, CVE-2026-72004, CVE-2026-72005, CVE-2026-72010, CVE-2026-72013, CVE-2026-72014,     CVE-2026-72019, CVE-2026-72020, CVE-2026-72021, CVE-2026-72022, CVE-2026-72024, CVE-2026-72025,     CVE-2026-72033, CVE-2026-72036, CVE-2026-72038, CVE-2026-72039, CVE-2026-72047, CVE-2026-72048,     CVE-2026-72049, CVE-2026-72052, CVE-2026-72054, CVE-2026-72055, CVE-2026-72056, CVE-2026-72061,     CVE-2026-72066, CVE-2026-72067, CVE-2026-72068, CVE-2026-72074, CVE-2026-72076, CVE-2026-72078,     CVE-2026-72079, CVE-2026-72081, CVE-2026-72082, CVE-2026-72083, CVE-2026-72084, CVE-2026-72085,     CVE-2026-72086, CVE-2026-72088, CVE-2026-72102, CVE-2026-72105, CVE-2026-72107, CVE-2026-72108,     CVE-2026-72109, CVE-2026-72113, CVE-2026-72114, CVE-2026-72115, CVE-2026-72116, CVE-2026-72117,     CVE-2026-72118, CVE-2026-72119, CVE-2026-72120, CVE-2026-72121, CVE-2026-72122, CVE-2026-72123,     CVE-2026-72124, CVE-2026-72125, CVE-2026-72126, CVE-2026-72129, CVE-2026-72133, CVE-2026-72135,     CVE-2026-72136, CVE-2026-72138, CVE-2026-72140, CVE-2026-72146, CVE-2026-72153, CVE-2026-72159,     CVE-2026-72160, CVE-2026-72163, CVE-2026-72164, CVE-2026-72165, CVE-2026-72166, CVE-2026-72167,     CVE-2026-72171, CVE-2026-72181, CVE-2026-72182, CVE-2026-72192, CVE-2026-72193, CVE-2026-72194,     CVE-2026-72195, CVE-2026-72197, CVE-2026-72215, CVE-2026-72218, CVE-2026-72219, CVE-2026-72223,     CVE-2026-72224, CVE-2026-72225, CVE-2026-72226, CVE-2026-72228, CVE-2026-72229, CVE-2026-72230,     CVE-2026-72231, CVE-2026-72232, CVE-2026-72233, CVE-2026-72234, CVE-2026-72235, CVE-2026-72238,     CVE-2026-72240, CVE-2026-72241, CVE-2026-72245, CVE-2026-72247, CVE-2026-72250, CVE-2026-72251,     CVE-2026-72256, CVE-2026-72264, CVE-2026-72265, CVE-2026-72267, CVE-2026-72268, CVE-2026-72269,     CVE-2026-72270, CVE-2026-72271, CVE-2026-72272, CVE-2026-72274, CVE-2026-72275, CVE-2026-72276,     CVE-2026-72282, CVE-2026-72289, CVE-2026-72296, CVE-2026-72297, CVE-2026-72298, CVE-2026-72306,     CVE-2026-72307, CVE-2026-72310, CVE-2026-72314, CVE-2026-72316, CVE-2026-72319, CVE-2026-72322,     CVE-2026-72326, CVE-2026-72339, CVE-2026-72347, CVE-2026-72348, CVE-2026-72349, CVE-2026-72350,     CVE-2026-72351, CVE-2026-72371, CVE-2026-72374, CVE-2026-72378, CVE-2026-72389, CVE-2026-72392,     CVE-2026-72396, CVE-2026-72400, CVE-2026-72406, CVE-2026-72409, CVE-2026-72414, CVE-2026-72418,     CVE-2026-72421, CVE-2026-72422, CVE-2026-72428, CVE-2026-72433, CVE-2026-72435, CVE-2026-72441,     CVE-2026-72447, CVE-2026-72448, CVE-2026-72450, CVE-2026-72459, CVE-2026-72460, CVE-2026-72466,     CVE-2026-72476, CVE-2026-72479, CVE-2026-72481, CVE-2026-72483, CVE-2026-72484, CVE-2026-72489,     CVE-2026-72491, CVE-2026-72492, CVE-2026-72502, CVE-2026-74255, CVE-2026-74256, CVE-2026-74262,     CVE-2026-74265, CVE-2026-74267, CVE-2026-74276, CVE-2026-74279, CVE-2026-74280, CVE-2026-74281,     CVE-2026-74282, CVE-2026-74283, CVE-2026-74284, CVE-2026-74287, CVE-2026-74288, CVE-2026-74292,     CVE-2026-74293, CVE-2026-74295, CVE-2026-74297, CVE-2026-74305, CVE-2026-74312, CVE-2026-74313,     CVE-2026-74320, CVE-2026-74321, CVE-2026-74327, CVE-2026-74329, CVE-2026-74330, CVE-2026-74331,     CVE-2026-74339, CVE-2026-74340, CVE-2026-74346, CVE-2026-74348, CVE-2026-74349, CVE-2026-74351,     CVE-2026-74359, CVE-2026-74363, CVE-2026-74376, CVE-2026-74379, CVE-2026-74382, CVE-2026-74384,     CVE-2026-74390, CVE-2026-74394, CVE-2026-74395, CVE-2026-74398, CVE-2026-74399, CVE-2026-74402,     CVE-2026-74408, CVE-2026-74410, CVE-2026-74416, CVE-2026-74424, CVE-2026-74426, CVE-2026-74427,     CVE-2026-74438, CVE-2026-74443, CVE-2026-74444, CVE-2026-74453, CVE-2026-74455, CVE-2026-74456,     CVE-2026-74457, CVE-2026-74458, CVE-2026-74459, CVE-2026-74460, CVE-2026-74461, CVE-2026-74463,     CVE-2026-74464, CVE-2026-74465, CVE-2026-74467, CVE-2026-74468, CVE-2026-74469, CVE-2026-74471,     CVE-2026-74473, CVE-2026-74475, CVE-2026-74478, CVE-2026-74480, CVE-2026-74481, CVE-2026-74482,     CVE-2026-74485, CVE-2026-74488, CVE-2026-74490, CVE-2026-74492, CVE-2026-74493, CVE-2026-74495,     CVE-2026-74497, CVE-2026-74498, CVE-2026-74499, CVE-2026-74505, CVE-2026-74507, CVE-2026-74508,     CVE-2026-74512, CVE-2026-74518, CVE-2026-74519, CVE-2026-74523, CVE-2026-74525, CVE-2026-74540,     CVE-2026-74546, CVE-2026-74547, CVE-2026-74548, CVE-2026-74549, CVE-2026-74556, CVE-2026-74557,     CVE-2026-74563, CVE-2026-74564, CVE-2026-74566, CVE-2026-74567, CVE-2026-74569, CVE-2026-74577,     CVE-2026-74578, CVE-2026-74579)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - In the Linux kernel, the following vulnerability has been resolved: smb: server: fix active_num_conn leak
    on transport allocation failure Commit 77ffbcac4e56 ("smb: server: fix leak of active_num_conn in
    ksmbd_tcp_new_connection()") addressed the kthread_run() failure path. The earlier alloc_transport() ==
    NULL path in the same function has the same leak, is reachable pre-authentication via any TCP connect to
    port 445, and was empirically reproduced on UML (ARCH=um, v7.0-rc7): a small number of forced allocation
    failures were sufficient to put ksmbd into a state where every subsequent connection attempt was rejected
    for the remainder of the boot. ksmbd_kthread_fn() increments active_num_conn before calling
    ksmbd_tcp_new_connection() and discards the return value, so when alloc_transport() returns NULL the
    socket is released and -ENOMEM returned without decrementing the counter. Each such failure permanently
    consumes one slot from the max_connections pool; once cumulative failures reach the cap,
    atomic_inc_return() hits the threshold on every subsequent accept and every new connection is rejected.
    The counter is only reset by module reload. An unauthenticated remote attacker can drive the server toward
    the memory pressure that makes alloc_transport() fail by holding open connections with large RFC1002
    lengths up to MAX_STREAM_PROT_LEN (0x00FFFFFF); natural transient allocation failures on a loaded host
    produce the same drift more slowly. Mirror the existing rollback pattern in ksmbd_kthread_fn(): on the
    alloc_transport() failure path, decrement active_num_conn gated on server_conf.max_connections. Repro
    details: with the patch reverted, forced alloc_transport() NULL returns leaked counter slots and
    subsequent connection attempts -- including legitimate connects issued after the forced-fail window had
    closed -- were all rejected with "Limit the maximum number of connections". With this patch applied, the
    same connect sequence produces no rejections and the counter cycles cleanly between zero and one on every
    accept. (CVE-2026-31711)

An update of the linux package has been released.

The remote Ubuntu 26.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8507-1 advisory.

    It was discovered that some AMD processors did not properly clear data in the floating point divider unit     during speculative execution. A local attacker could use this to expose sensitive information.
    (CVE-2025-54505)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - ARM64 architecture;

    - x86 architecture;

    - Block layer subsystem;

    - Cryptographic API;

    - Rados block device (RBD) driver;

    - Compressed RAM block device driver;

    - Character device driver;

    - TPM device driver;

    - Hardware crypto device drivers;

    - EDAC drivers;

    - GPU drivers;

    - Greybus drivers;

    - HID subsystem;

    - Microsoft Hyper-V drivers;

    - Hardware monitoring drivers;

    - I2C subsystem;

    - IIO subsystem;

    - InfiniBand drivers;

    - Input Device core drivers;

    - LED subsystem;

    - Multiple devices driver;

    - Media drivers;

    - IBM Advanced System Management driver;

    - MTD block device drivers;

    - Network drivers;

    - Microsoft Azure Network Adapter (MANA) driver;

    - NTB driver;

    - NVME drivers;

    - Device tree and open firmware driver;

    - PCI subsystem;

    - Remote Processor subsystem;

    - SCSI subsystem;

    - SPI subsystem;

    - Realtek RTL8723BS SDIO drivers;

    - SM750 framebuffer staging driver;

    - Thermal drivers;

    - USB Gadget drivers;

    - USB over IP driver;

    - VFIO drivers;

    - Framebuffer layer;

    - 9P distributed file system;

    - AFS file system;

    - Ceph distributed file system;

    - File systems infrastructure;

    - EROFS file system;

    - Ext4 file system;

    - F2FS file system;

    - FUSE (File system in Userspace);

    - Journaling layer for block devices (JBD2);

    - NILFS2 file system;

    - File system notification infrastructure;

    - NTFS3 file system;

    - OCFS2 file system;

    - SMB network file system;

    - UDF file system;

    - XFS file system;

    - Codetag library;

    - Memory management;

    - Memory Management;

    - KVM subsystem;

    - Tracing infrastructure;

    - User-space API (UAPI);

    - io_uring subsystem;

    - Locking primitives;

    - Timer subsystem;

    - Scatterlist API;

    - Heterogeneous memory management;

    - KASAN memory debugging framework;

    - Bluetooth subsystem;

    - Ethernet bridge;

    - CAIF protocol;

    - CAN network layer;

    - Ceph Core library;

    - IPv4 networking;

    - IPv6 networking;

    - Multipath TCP;

    - Netfilter;

    - NFC subsystem;

    - Packet sockets;

    - Qualcomm IPC Router (QRTR);

    - RDS protocol;

    - RxRPC session sockets;

    - SMC sockets;

    - Stream parser;

    - Landlock security;

    - SELinux security module;

    - ALSA framework;

    - Generic PCM loopback sound driver;

    - FireWire sound drivers;

    - Creative Sound Blaster X-Fi driver;

    - QCOM ASoC drivers;

    - USB sound devices;

    - Objtool; (CVE-2026-31532, CVE-2026-31574, CVE-2026-31575, CVE-2026-31576, CVE-2026-31577,     CVE-2026-31578, CVE-2026-31579, CVE-2026-31580, CVE-2026-31581, CVE-2026-31582, CVE-2026-31583,     CVE-2026-31584, CVE-2026-31585, CVE-2026-31586, CVE-2026-31587, CVE-2026-31588, CVE-2026-31589,     CVE-2026-31590, CVE-2026-31591, CVE-2026-31592, CVE-2026-31593, CVE-2026-31594, CVE-2026-31595,     CVE-2026-31596, CVE-2026-31597, CVE-2026-31598, CVE-2026-31599, CVE-2026-31600, CVE-2026-31601,     CVE-2026-31602, CVE-2026-31603, CVE-2026-31604, CVE-2026-31605, CVE-2026-31606, CVE-2026-31607,     CVE-2026-31608, CVE-2026-31609, CVE-2026-31610, CVE-2026-31611, CVE-2026-31612, CVE-2026-31613,     CVE-2026-31614, CVE-2026-31615, CVE-2026-31616, CVE-2026-31617, CVE-2026-31618, CVE-2026-31619,     CVE-2026-31620, CVE-2026-31621, CVE-2026-31622, CVE-2026-31623, CVE-2026-31624, CVE-2026-31625,     CVE-2026-31626, CVE-2026-31627, CVE-2026-31628, CVE-2026-31629, CVE-2026-31686, CVE-2026-31694,     CVE-2026-31696, CVE-2026-31697, CVE-2026-31698, CVE-2026-31699, CVE-2026-31700, CVE-2026-31701,     CVE-2026-31702, CVE-2026-31703, CVE-2026-31704, CVE-2026-31705, CVE-2026-31706, CVE-2026-31707,     CVE-2026-31708, CVE-2026-31709, CVE-2026-31710, CVE-2026-31711, CVE-2026-31712, CVE-2026-31713,     CVE-2026-31714, CVE-2026-31715, CVE-2026-31716, CVE-2026-31717, CVE-2026-31718, CVE-2026-31719,     CVE-2026-43058, CVE-2026-43071, CVE-2026-43072, CVE-2026-43073, CVE-2026-43348, CVE-2026-43349,     CVE-2026-43350, CVE-2026-43491, CVE-2026-43493, CVE-2026-43499, CVE-2026-43501, CVE-2026-45986,     CVE-2026-45987, CVE-2026-45988, CVE-2026-45989, CVE-2026-45990, CVE-2026-45991, CVE-2026-45994,     CVE-2026-45995, CVE-2026-45996, CVE-2026-45997, CVE-2026-45999, CVE-2026-46001, CVE-2026-46002,     CVE-2026-46003, CVE-2026-46004, CVE-2026-46005, CVE-2026-46006, CVE-2026-46007, CVE-2026-46008,     CVE-2026-46009, CVE-2026-46010, CVE-2026-46011, CVE-2026-46012, CVE-2026-46013, CVE-2026-46014,     CVE-2026-46015, CVE-2026-46016, CVE-2026-46018, CVE-2026-46019, CVE-2026-46020, CVE-2026-46021,     CVE-2026-46022, CVE-2026-46023, CVE-2026-46024, CVE-2026-46025, CVE-2026-46026, CVE-2026-46027,     CVE-2026-46028, CVE-2026-46029, CVE-2026-46030, CVE-2026-46031, CVE-2026-46032, CVE-2026-46033,     CVE-2026-46034, CVE-2026-46035, CVE-2026-46036, CVE-2026-46037, CVE-2026-46038, CVE-2026-46039,     CVE-2026-46040, CVE-2026-46041, CVE-2026-46042, CVE-2026-46043, CVE-2026-46044, CVE-2026-46045,     CVE-2026-46046, CVE-2026-46047, CVE-2026-46049, CVE-2026-46050, CVE-2026-46051, CVE-2026-46052,     CVE-2026-46053, CVE-2026-46054, CVE-2026-46056, CVE-2026-46057, CVE-2026-46058, CVE-2026-46059,     CVE-2026-46060, CVE-2026-46061, CVE-2026-46062, CVE-2026-46063, CVE-2026-46064, CVE-2026-46065,     CVE-2026-46066, CVE-2026-46067, CVE-2026-46068, CVE-2026-46069, CVE-2026-46070, CVE-2026-46071,     CVE-2026-46072, CVE-2026-46073, CVE-2026-46074, CVE-2026-46075, CVE-2026-46076, CVE-2026-46077,     CVE-2026-46078, CVE-2026-46079, CVE-2026-46080, CVE-2026-46081, CVE-2026-46082, CVE-2026-46083,     CVE-2026-46084, CVE-2026-46085, CVE-2026-46086, CVE-2026-46087, CVE-2026-46088, CVE-2026-46089,     CVE-2026-46090, CVE-2026-46091, CVE-2026-46092, CVE-2026-46093, CVE-2026-46094, CVE-2026-46095,     CVE-2026-46096, CVE-2026-46097, CVE-2026-46098, CVE-2026-46099, CVE-2026-46100, CVE-2026-46101,     CVE-2026-46102, CVE-2026-46103, CVE-2026-46115, CVE-2026-46119, CVE-2026-46135, CVE-2026-46137,     CVE-2026-46155, CVE-2026-46185, CVE-2026-46195, CVE-2026-46243, CVE-2026-46244, CVE-2026-46276,     CVE-2026-46277, CVE-2026-46278, CVE-2026-46279, CVE-2026-46280, CVE-2026-46281, CVE-2026-46282,     CVE-2026-46283, CVE-2026-46284, CVE-2026-46285, CVE-2026-46286, CVE-2026-46287, CVE-2026-46288,     CVE-2026-46289, CVE-2026-46316, CVE-2026-46332, CVE-2026-52904, CVE-2026-52905, CVE-2026-52906,     CVE-2026-52907, CVE-2026-52933)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4671 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4671-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                        Ben Hutchings     July 05, 2026                                 https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : linux-6.1     Version        : 6.1.176-1~deb11u1     CVE ID         : CVE-2023-53292 CVE-2023-53989 CVE-2023-54125 CVE-2023-54271                      CVE-2023-54322 CVE-2024-27012 CVE-2024-36922 CVE-2024-53221                      CVE-2024-56657 CVE-2025-10263 CVE-2025-21739 CVE-2025-21863                      CVE-2025-22105 CVE-2025-37864 CVE-2025-38584 CVE-2025-38627                      CVE-2025-38710 CVE-2025-39997 CVE-2025-40347 CVE-2025-68201                      CVE-2025-68315 CVE-2025-68823 CVE-2026-23066 CVE-2026-23255                      CVE-2026-23310 CVE-2026-23389 CVE-2026-23399 CVE-2026-23442                      CVE-2026-23444 CVE-2026-23468 CVE-2026-31407 CVE-2026-31449                      CVE-2026-31488 CVE-2026-31489 CVE-2026-31500 CVE-2026-31532                      CVE-2026-31576 CVE-2026-31577 CVE-2026-31578 CVE-2026-31580                      CVE-2026-31581 CVE-2026-31583 CVE-2026-31585 CVE-2026-31586                      CVE-2026-31587 CVE-2026-31588 CVE-2026-31590 CVE-2026-31594                      CVE-2026-31595 CVE-2026-31596 CVE-2026-31597 CVE-2026-31598                      CVE-2026-31599 CVE-2026-31602 CVE-2026-31603 CVE-2026-31605                      CVE-2026-31607 CVE-2026-31611 CVE-2026-31612 CVE-2026-31613                      CVE-2026-31615 CVE-2026-31616 CVE-2026-31617 CVE-2026-31618                      CVE-2026-31619 CVE-2026-31622 CVE-2026-31623 CVE-2026-31624                      CVE-2026-31625 CVE-2026-31626 CVE-2026-31627 CVE-2026-31629                      CVE-2026-31630 CVE-2026-31637 CVE-2026-31642 CVE-2026-31673                      CVE-2026-31676 CVE-2026-31681 CVE-2026-31684 CVE-2026-31685                      CVE-2026-31686 CVE-2026-31696 CVE-2026-31697 CVE-2026-31698                      CVE-2026-31699 CVE-2026-31700 CVE-2026-31701 CVE-2026-31702                      CVE-2026-31704 CVE-2026-31705 CVE-2026-31708 CVE-2026-31709                      CVE-2026-31711 CVE-2026-31712 CVE-2026-31715 CVE-2026-31716                      CVE-2026-43052 CVE-2026-43058 CVE-2026-43064 CVE-2026-43071                      CVE-2026-43072 CVE-2026-43075 CVE-2026-43076 CVE-2026-43079                      CVE-2026-43080 CVE-2026-43085 CVE-2026-43089 CVE-2026-43093                      CVE-2026-43094 CVE-2026-43098 CVE-2026-43099 CVE-2026-43103                      CVE-2026-43104 CVE-2026-43105 CVE-2026-43110 CVE-2026-43111                      CVE-2026-43112 CVE-2026-43113 CVE-2026-43114 CVE-2026-43116                      CVE-2026-43117 CVE-2026-43219 CVE-2026-43303 CVE-2026-43350                      CVE-2026-43421 CVE-2026-43492 CVE-2026-43493 CVE-2026-43494                      CVE-2026-43495 CVE-2026-43496 CVE-2026-43497 CVE-2026-43499                      CVE-2026-43501 CVE-2026-43502 CVE-2026-45834 CVE-2026-45835                      CVE-2026-45836 CVE-2026-45838 CVE-2026-45839 CVE-2026-45840                      CVE-2026-45841 CVE-2026-45842 CVE-2026-45843 CVE-2026-45844                      CVE-2026-45846 CVE-2026-45850 CVE-2026-45930 CVE-2026-45986                      CVE-2026-45987 CVE-2026-45991 CVE-2026-45994 CVE-2026-45996                      CVE-2026-45997 CVE-2026-45999 CVE-2026-46002 CVE-2026-46003                      CVE-2026-46004 CVE-2026-46005 CVE-2026-46006 CVE-2026-46009                      CVE-2026-46015 CVE-2026-46018 CVE-2026-46019 CVE-2026-46021                      CVE-2026-46022 CVE-2026-46023 CVE-2026-46024 CVE-2026-46026                      CVE-2026-46027 CVE-2026-46031 CVE-2026-46033 CVE-2026-46037                      CVE-2026-46038 CVE-2026-46040 CVE-2026-46043 CVE-2026-46044                      CVE-2026-46046 CVE-2026-46047 CVE-2026-46049 CVE-2026-46050                      CVE-2026-46051 CVE-2026-46052 CVE-2026-46053 CVE-2026-46056                      CVE-2026-46058 CVE-2026-46062 CVE-2026-46064 CVE-2026-46065                      CVE-2026-46069 CVE-2026-46070 CVE-2026-46072 CVE-2026-46075                      CVE-2026-46077 CVE-2026-46078 CVE-2026-46079 CVE-2026-46080                      CVE-2026-46082 CVE-2026-46083 CVE-2026-46086 CVE-2026-46088                      CVE-2026-46091 CVE-2026-46098 CVE-2026-46099 CVE-2026-46101                      CVE-2026-46102 CVE-2026-46103 CVE-2026-46107 CVE-2026-46108                      CVE-2026-46109 CVE-2026-46110 CVE-2026-46112 CVE-2026-46113                      CVE-2026-46116 CVE-2026-46119 CVE-2026-46120 CVE-2026-46122                      CVE-2026-46123 CVE-2026-46124 CVE-2026-46125 CVE-2026-46127                      CVE-2026-46128 CVE-2026-46129 CVE-2026-46132 CVE-2026-46133                      CVE-2026-46136 CVE-2026-46137 CVE-2026-46143 CVE-2026-46146                      CVE-2026-46149 CVE-2026-46150 CVE-2026-46151 CVE-2026-46159                      CVE-2026-46160 CVE-2026-46161 CVE-2026-46163 CVE-2026-46164                      CVE-2026-46165 CVE-2026-46167 CVE-2026-46168 CVE-2026-46169                      CVE-2026-46172 CVE-2026-46173 CVE-2026-46177 CVE-2026-46178                      CVE-2026-46179 CVE-2026-46180 CVE-2026-46184 CVE-2026-46185                      CVE-2026-46186 CVE-2026-46187 CVE-2026-46189 CVE-2026-46190                      CVE-2026-46191 CVE-2026-46193 CVE-2026-46195 CVE-2026-46196                      CVE-2026-46197 CVE-2026-46198 CVE-2026-46199 CVE-2026-46205                      CVE-2026-46206 CVE-2026-46208 CVE-2026-46209 CVE-2026-46212                      CVE-2026-46214 CVE-2026-46218 CVE-2026-46220 CVE-2026-46227                      CVE-2026-46230 CVE-2026-46231 CVE-2026-46233 CVE-2026-46234                      CVE-2026-46235 CVE-2026-46236 CVE-2026-46238 CVE-2026-46273                      CVE-2026-46275 CVE-2026-46276 CVE-2026-46280 CVE-2026-46285                      CVE-2026-46291 CVE-2026-46292 CVE-2026-46294 CVE-2026-46296                      CVE-2026-46299 CVE-2026-46301 CVE-2026-46303 CVE-2026-46304                      CVE-2026-46306 CVE-2026-46307 CVE-2026-46314 CVE-2026-46319                      CVE-2026-46320 CVE-2026-46321 CVE-2026-46322 CVE-2026-46323                      CVE-2026-46331 CVE-2026-52909 CVE-2026-52910 CVE-2026-52911                      CVE-2026-52912 CVE-2026-52913 CVE-2026-52914 CVE-2026-52915                      CVE-2026-52916 CVE-2026-52917 CVE-2026-52918 CVE-2026-52919                      CVE-2026-52920 CVE-2026-52921 CVE-2026-52922 CVE-2026-52923                      CVE-2026-52924 CVE-2026-52925 CVE-2026-52926 CVE-2026-52927                      CVE-2026-52929 CVE-2026-52930 CVE-2026-52931 CVE-2026-52933                      CVE-2026-52934 CVE-2026-52935 CVE-2026-52939 CVE-2026-52941                      CVE-2026-52942 CVE-2026-52943 CVE-2026-52946 CVE-2026-52947                      CVE-2026-52948 CVE-2026-52954 CVE-2026-52955 CVE-2026-52957                      CVE-2026-52958 CVE-2026-52962 CVE-2026-52963 CVE-2026-52967                      CVE-2026-52968 CVE-2026-52969 CVE-2026-52970 CVE-2026-52972                      CVE-2026-52974 CVE-2026-52975 CVE-2026-52977 CVE-2026-52981                      CVE-2026-52982 CVE-2026-52984 CVE-2026-52985 CVE-2026-52986                      CVE-2026-52989 CVE-2026-52992 CVE-2026-52993 CVE-2026-52995                      CVE-2026-52998 CVE-2026-52999 CVE-2026-53001 CVE-2026-53002                      CVE-2026-53003 CVE-2026-53004 CVE-2026-53006 CVE-2026-53011                      CVE-2026-53012 CVE-2026-53016 CVE-2026-53021 CVE-2026-53022                      CVE-2026-53023 CVE-2026-53033 CVE-2026-53034 CVE-2026-53035                      CVE-2026-53036 CVE-2026-53037 CVE-2026-53039 CVE-2026-53040                      CVE-2026-53041 CVE-2026-53043 CVE-2026-53045 CVE-2026-53046                      CVE-2026-53047 CVE-2026-53048 CVE-2026-53049 CVE-2026-53050                      CVE-2026-53052 CVE-2026-53056 CVE-2026-53059 CVE-2026-53060                      CVE-2026-53061 CVE-2026-53062 CVE-2026-53063 CVE-2026-53064                      CVE-2026-53065 CVE-2026-53066 CVE-2026-53068 CVE-2026-53069                      CVE-2026-53071 CVE-2026-53072 CVE-2026-53073 CVE-2026-53074                      CVE-2026-53075 CVE-2026-53077 CVE-2026-53080 CVE-2026-53082                      CVE-2026-53086 CVE-2026-53088 CVE-2026-53093 CVE-2026-53096                      CVE-2026-53111 CVE-2026-53112 CVE-2026-53128 CVE-2026-53130                      CVE-2026-53131 CVE-2026-53133 CVE-2026-53134 CVE-2026-53135                      CVE-2026-53136 CVE-2026-53137 CVE-2026-53146 CVE-2026-53147                      CVE-2026-53148 CVE-2026-53149 CVE-2026-53150 CVE-2026-53159                      CVE-2026-53160 CVE-2026-53161 CVE-2026-53168 CVE-2026-53176                      CVE-2026-53177 CVE-2026-53181 CVE-2026-53182 CVE-2026-53183                      CVE-2026-53184 CVE-2026-53186 CVE-2026-53189 CVE-2026-53194                      CVE-2026-53195 CVE-2026-53196 CVE-2026-53198 CVE-2026-53199                      CVE-2026-53207 CVE-2026-53208 CVE-2026-53209 CVE-2026-53212                      CVE-2026-53213 CVE-2026-53215 CVE-2026-53216 CVE-2026-53217                      CVE-2026-53218 CVE-2026-53219 CVE-2026-53221 CVE-2026-53223                      CVE-2026-53225 CVE-2026-53227 CVE-2026-53228 CVE-2026-53236                      CVE-2026-53238 CVE-2026-53239 CVE-2026-53242 CVE-2026-53245                      CVE-2026-53249 CVE-2026-53252 CVE-2026-53253 CVE-2026-53254                      CVE-2026-53255 CVE-2026-53256 CVE-2026-53263 CVE-2026-53264                      CVE-2026-53266 CVE-2026-53268 CVE-2026-53269 CVE-2026-53270                      CVE-2026-53273 CVE-2026-53274 CVE-2026-53275 CVE-2026-53279                      CVE-2026-53287 CVE-2026-53289 CVE-2026-53291 CVE-2026-53294                      CVE-2026-53295 CVE-2026-53296 CVE-2026-53303 CVE-2026-53304                      CVE-2026-53306 CVE-2026-53309 CVE-2026-53314 CVE-2026-53320                      CVE-2026-53329 CVE-2026-53331 CVE-2026-53337 CVE-2026-53339                      CVE-2026-53343 CVE-2026-53349 CVE-2026-53350 CVE-2026-53352                      CVE-2026-53354 CVE-2026-53355 CVE-2026-53356 CVE-2026-53357     Debian Bug     : 1130365 1119093

    Several vulnerabilities have been discovered in the Linux kernel that     may lead to a privilege escalation, denial of service or information     leaks.

    For Debian 11 bullseye, these problems have been fixed in version     6.1.176-1~deb11u1.  This version additionally includes many more bug     fixes from stable updates 6.1.175 and 6.1.176.

    We recommend that you upgrade your linux-6.1 packages.

    For the detailed security status of linux-6.1 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/linux-6.1

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4665 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4665-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                        Ben Hutchings     July 03, 2026                                 https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : linux     Version        : 6.1.176-1     CVE ID         : CVE-2023-53292 CVE-2023-53989 CVE-2023-54125 CVE-2023-54271                      CVE-2023-54322 CVE-2024-27012 CVE-2024-36922 CVE-2024-53221                      CVE-2024-56657 CVE-2025-10263 CVE-2025-21739 CVE-2025-21863                      CVE-2025-22105 CVE-2025-37864 CVE-2025-38584 CVE-2025-38627                      CVE-2025-38710 CVE-2025-39997 CVE-2025-40347 CVE-2025-68201                      CVE-2025-68315 CVE-2025-68823 CVE-2026-23066 CVE-2026-23255                      CVE-2026-23310 CVE-2026-23389 CVE-2026-23399 CVE-2026-23442                      CVE-2026-23444 CVE-2026-23468 CVE-2026-31407 CVE-2026-31449                      CVE-2026-31488 CVE-2026-31489 CVE-2026-31500 CVE-2026-31532                      CVE-2026-31576 CVE-2026-31577 CVE-2026-31578 CVE-2026-31580                      CVE-2026-31581 CVE-2026-31583 CVE-2026-31585 CVE-2026-31586                      CVE-2026-31587 CVE-2026-31588 CVE-2026-31590 CVE-2026-31594                      CVE-2026-31595 CVE-2026-31596 CVE-2026-31597 CVE-2026-31598                      CVE-2026-31599 CVE-2026-31602 CVE-2026-31603 CVE-2026-31605                      CVE-2026-31607 CVE-2026-31611 CVE-2026-31612 CVE-2026-31613                      CVE-2026-31615 CVE-2026-31616 CVE-2026-31617 CVE-2026-31618                      CVE-2026-31619 CVE-2026-31622 CVE-2026-31623 CVE-2026-31624                      CVE-2026-31625 CVE-2026-31626 CVE-2026-31627 CVE-2026-31629                      CVE-2026-31630 CVE-2026-31637 CVE-2026-31642 CVE-2026-31673                      CVE-2026-31676 CVE-2026-31681 CVE-2026-31684 CVE-2026-31685                      CVE-2026-31686 CVE-2026-31696 CVE-2026-31697 CVE-2026-31698                      CVE-2026-31699 CVE-2026-31700 CVE-2026-31701 CVE-2026-31702                      CVE-2026-31704 CVE-2026-31705 CVE-2026-31708 CVE-2026-31709                      CVE-2026-31711 CVE-2026-31712 CVE-2026-31715 CVE-2026-31716                      CVE-2026-43052 CVE-2026-43058 CVE-2026-43064 CVE-2026-43071                      CVE-2026-43072 CVE-2026-43075 CVE-2026-43076 CVE-2026-43079                      CVE-2026-43080 CVE-2026-43085 CVE-2026-43089 CVE-2026-43093                      CVE-2026-43094 CVE-2026-43098 CVE-2026-43099 CVE-2026-43103                      CVE-2026-43104 CVE-2026-43105 CVE-2026-43110 CVE-2026-43111                      CVE-2026-43112 CVE-2026-43113 CVE-2026-43114 CVE-2026-43116                      CVE-2026-43117 CVE-2026-43219 CVE-2026-43303 CVE-2026-43350                      CVE-2026-43421 CVE-2026-43492 CVE-2026-43493 CVE-2026-43494                      CVE-2026-43495 CVE-2026-43496 CVE-2026-43497 CVE-2026-43499                      CVE-2026-43501 CVE-2026-43502 CVE-2026-45834 CVE-2026-45835                      CVE-2026-45836 CVE-2026-45838 CVE-2026-45839 CVE-2026-45840                      CVE-2026-45841 CVE-2026-45842 CVE-2026-45843 CVE-2026-45844                      CVE-2026-45846 CVE-2026-45850 CVE-2026-45930 CVE-2026-45986                      CVE-2026-45987 CVE-2026-45991 CVE-2026-45994 CVE-2026-45996                      CVE-2026-45997 CVE-2026-45999 CVE-2026-46002 CVE-2026-46003                      CVE-2026-46004 CVE-2026-46005 CVE-2026-46006 CVE-2026-46009                      CVE-2026-46015 CVE-2026-46018 CVE-2026-46019 CVE-2026-46021                      CVE-2026-46022 CVE-2026-46023 CVE-2026-46024 CVE-2026-46026                      CVE-2026-46027 CVE-2026-46031 CVE-2026-46033 CVE-2026-46037                      CVE-2026-46038 CVE-2026-46040 CVE-2026-46043 CVE-2026-46044                      CVE-2026-46046 CVE-2026-46047 CVE-2026-46049 CVE-2026-46050                      CVE-2026-46051 CVE-2026-46052 CVE-2026-46053 CVE-2026-46056                      CVE-2026-46058 CVE-2026-46062 CVE-2026-46064 CVE-2026-46065                      CVE-2026-46069 CVE-2026-46070 CVE-2026-46072 CVE-2026-46075                      CVE-2026-46077 CVE-2026-46078 CVE-2026-46079 CVE-2026-46080                      CVE-2026-46082 CVE-2026-46083 CVE-2026-46086 CVE-2026-46088                      CVE-2026-46091 CVE-2026-46098 CVE-2026-46099 CVE-2026-46101                      CVE-2026-46102 CVE-2026-46103 CVE-2026-46107 CVE-2026-46108                      CVE-2026-46109 CVE-2026-46110 CVE-2026-46112 CVE-2026-46113                      CVE-2026-46116 CVE-2026-46119 CVE-2026-46120 CVE-2026-46122                      CVE-2026-46123 CVE-2026-46124 CVE-2026-46125 CVE-2026-46127                      CVE-2026-46128 CVE-2026-46129 CVE-2026-46132 CVE-2026-46133                      CVE-2026-46136 CVE-2026-46137 CVE-2026-46143 CVE-2026-46146                      CVE-2026-46149 CVE-2026-46150 CVE-2026-46151 CVE-2026-46159                      CVE-2026-46160 CVE-2026-46161 CVE-2026-46163 CVE-2026-46164                      CVE-2026-46165 CVE-2026-46167 CVE-2026-46168 CVE-2026-46169                      CVE-2026-46172 CVE-2026-46173 CVE-2026-46177 CVE-2026-46178                      CVE-2026-46179 CVE-2026-46180 CVE-2026-46184 CVE-2026-46185                      CVE-2026-46186 CVE-2026-46187 CVE-2026-46189 CVE-2026-46190                      CVE-2026-46191 CVE-2026-46193 CVE-2026-46195 CVE-2026-46196                      CVE-2026-46197 CVE-2026-46198 CVE-2026-46199 CVE-2026-46205                      CVE-2026-46206 CVE-2026-46208 CVE-2026-46209 CVE-2026-46212                      CVE-2026-46214 CVE-2026-46218 CVE-2026-46220 CVE-2026-46227                      CVE-2026-46230 CVE-2026-46231 CVE-2026-46233 CVE-2026-46234                      CVE-2026-46235 CVE-2026-46236 CVE-2026-46238 CVE-2026-46273                      CVE-2026-46275 CVE-2026-46276 CVE-2026-46280 CVE-2026-46285                      CVE-2026-46291 CVE-2026-46292 CVE-2026-46294 CVE-2026-46296                      CVE-2026-46299 CVE-2026-46301 CVE-2026-46303 CVE-2026-46304                      CVE-2026-46306 CVE-2026-46307 CVE-2026-46314 CVE-2026-46319                      CVE-2026-46320 CVE-2026-46321 CVE-2026-46322 CVE-2026-46323                      CVE-2026-46331 CVE-2026-52909 CVE-2026-52910 CVE-2026-52911                      CVE-2026-52912 CVE-2026-52913 CVE-2026-52914 CVE-2026-52915                      CVE-2026-52916 CVE-2026-52917 CVE-2026-52918 CVE-2026-52919                      CVE-2026-52920 CVE-2026-52921 CVE-2026-52922 CVE-2026-52923                      CVE-2026-52924 CVE-2026-52925 CVE-2026-52926 CVE-2026-52927                      CVE-2026-52929 CVE-2026-52930 CVE-2026-52931 CVE-2026-52933                      CVE-2026-52934 CVE-2026-52935 CVE-2026-52939 CVE-2026-52941                      CVE-2026-52942 CVE-2026-52943 CVE-2026-52946 CVE-2026-52947                      CVE-2026-52948 CVE-2026-52954 CVE-2026-52955 CVE-2026-52957                      CVE-2026-52958 CVE-2026-52962 CVE-2026-52963 CVE-2026-52967                      CVE-2026-52968 CVE-2026-52969 CVE-2026-52970 CVE-2026-52972                      CVE-2026-52974 CVE-2026-52975 CVE-2026-52977 CVE-2026-52981                      CVE-2026-52982 CVE-2026-52984 CVE-2026-52985 CVE-2026-52986                      CVE-2026-52989 CVE-2026-52992 CVE-2026-52993 CVE-2026-52995                      CVE-2026-52998 CVE-2026-52999 CVE-2026-53001 CVE-2026-53002                      CVE-2026-53003 CVE-2026-53004 CVE-2026-53006 CVE-2026-53011                      CVE-2026-53012 CVE-2026-53016 CVE-2026-53021 CVE-2026-53022                      CVE-2026-53023 CVE-2026-53033 CVE-2026-53034 CVE-2026-53035                      CVE-2026-53036 CVE-2026-53037 CVE-2026-53039 CVE-2026-53040                      CVE-2026-53041 CVE-2026-53043 CVE-2026-53045 CVE-2026-53046                      CVE-2026-53047 CVE-2026-53048 CVE-2026-53049 CVE-2026-53050                      CVE-2026-53052 CVE-2026-53056 CVE-2026-53059 CVE-2026-53060                      CVE-2026-53061 CVE-2026-53062 CVE-2026-53063 CVE-2026-53064                      CVE-2026-53065 CVE-2026-53066 CVE-2026-53068 CVE-2026-53069                      CVE-2026-53071 CVE-2026-53072 CVE-2026-53073 CVE-2026-53074                      CVE-2026-53075 CVE-2026-53077 CVE-2026-53080 CVE-2026-53082                      CVE-2026-53086 CVE-2026-53088 CVE-2026-53093 CVE-2026-53096                      CVE-2026-53111 CVE-2026-53112 CVE-2026-53128 CVE-2026-53130                      CVE-2026-53131 CVE-2026-53133 CVE-2026-53134 CVE-2026-53135                      CVE-2026-53136 CVE-2026-53137 CVE-2026-53146 CVE-2026-53147                      CVE-2026-53148 CVE-2026-53149 CVE-2026-53150 CVE-2026-53159                      CVE-2026-53160 CVE-2026-53161 CVE-2026-53168 CVE-2026-53176                      CVE-2026-53177 CVE-2026-53181 CVE-2026-53182 CVE-2026-53183                      CVE-2026-53184 CVE-2026-53186 CVE-2026-53189 CVE-2026-53194                      CVE-2026-53195 CVE-2026-53196 CVE-2026-53198 CVE-2026-53199                      CVE-2026-53207 CVE-2026-53208 CVE-2026-53209 CVE-2026-53212                      CVE-2026-53213 CVE-2026-53215 CVE-2026-53216 CVE-2026-53217                      CVE-2026-53218 CVE-2026-53219 CVE-2026-53221 CVE-2026-53223                      CVE-2026-53225 CVE-2026-53227 CVE-2026-53228 CVE-2026-53236                      CVE-2026-53238 CVE-2026-53239 CVE-2026-53242 CVE-2026-53245                      CVE-2026-53249 CVE-2026-53252 CVE-2026-53253 CVE-2026-53254                      CVE-2026-53255 CVE-2026-53256 CVE-2026-53263 CVE-2026-53264                      CVE-2026-53266 CVE-2026-53268 CVE-2026-53269 CVE-2026-53270                      CVE-2026-53273 CVE-2026-53274 CVE-2026-53275 CVE-2026-53279                      CVE-2026-53287 CVE-2026-53289 CVE-2026-53291 CVE-2026-53294                      CVE-2026-53295 CVE-2026-53296 CVE-2026-53303 CVE-2026-53304                      CVE-2026-53306 CVE-2026-53309 CVE-2026-53314 CVE-2026-53320                      CVE-2026-53329 CVE-2026-53331 CVE-2026-53337 CVE-2026-53339                      CVE-2026-53343 CVE-2026-53349 CVE-2026-53350 CVE-2026-53352                      CVE-2026-53354 CVE-2026-53355 CVE-2026-53356 CVE-2026-53357     Debian Bug     : 1130365 1119093

    Several vulnerabilities have been discovered in the Linux kernel that     may lead to a privilege escalation, denial of service or information     leaks.

    For Debian 12 bookworm, these problems have been fixed in version     6.1.176-1.  This version additionally includes many more bug fixes     from stable updates 6.1.175 and 6.1.176.

    We recommend that you upgrade your linux packages.

    For the detailed security status of linux please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/linux

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 26.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8488-1 advisory.

    It was discovered that some AMD processors did not properly clear data in the floating point divider unit     during speculative execution. A local attacker could use this to expose sensitive information.
    (CVE-2025-54505)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - ARM64 architecture;

    - x86 architecture;

    - Block layer subsystem;

    - Cryptographic API;

    - Rados block device (RBD) driver;

    - Compressed RAM block device driver;

    - Character device driver;

    - TPM device driver;

    - Hardware crypto device drivers;

    - EDAC drivers;

    - GPU drivers;

    - Greybus drivers;

    - HID subsystem;

    - Microsoft Hyper-V drivers;

    - Hardware monitoring drivers;

    - I2C subsystem;

    - IIO subsystem;

    - InfiniBand drivers;

    - Input Device core drivers;

    - LED subsystem;

    - Multiple devices driver;

    - Media drivers;

    - IBM Advanced System Management driver;

    - MTD block device drivers;

    - Network drivers;

    - Microsoft Azure Network Adapter (MANA) driver;

    - NTB driver;

    - NVME drivers;

    - Device tree and open firmware driver;

    - PCI subsystem;

    - Remote Processor subsystem;

    - SCSI subsystem;

    - SPI subsystem;

    - Realtek RTL8723BS SDIO drivers;

    - SM750 framebuffer staging driver;

    - Thermal drivers;

    - USB Gadget drivers;

    - USB over IP driver;

    - VFIO drivers;

    - Framebuffer layer;

    - 9P distributed file system;

    - AFS file system;

    - Ceph distributed file system;

    - File systems infrastructure;

    - EROFS file system;

    - Ext4 file system;

    - F2FS file system;

    - FUSE (File system in Userspace);

    - Journaling layer for block devices (JBD2);

    - NILFS2 file system;

    - File system notification infrastructure;

    - NTFS3 file system;

    - OCFS2 file system;

    - SMB network file system;

    - UDF file system;

    - XFS file system;

    - Codetag library;

    - Memory management;

    - Memory Management;

    - KVM subsystem;

    - Tracing infrastructure;

    - User-space API (UAPI);

    - io_uring subsystem;

    - Locking primitives;

    - Timer subsystem;

    - Scatterlist API;

    - Heterogeneous memory management;

    - KASAN memory debugging framework;

    - Bluetooth subsystem;

    - Ethernet bridge;

    - CAIF protocol;

    - CAN network layer;

    - Ceph Core library;

    - IPv4 networking;

    - IPv6 networking;

    - Multipath TCP;

    - Netfilter;

    - NFC subsystem;

    - Packet sockets;

    - Qualcomm IPC Router (QRTR);

    - RDS protocol;

    - RxRPC session sockets;

    - SMC sockets;

    - Stream parser;

    - Landlock security;

    - SELinux security module;

    - ALSA framework;

    - Generic PCM loopback sound driver;

    - FireWire sound drivers;

    - Creative Sound Blaster X-Fi driver;

    - QCOM ASoC drivers;

    - USB sound devices;

    - Objtool; (CVE-2026-31532, CVE-2026-31574, CVE-2026-31575, CVE-2026-31576, CVE-2026-31577,     CVE-2026-31578, CVE-2026-31579, CVE-2026-31580, CVE-2026-31581, CVE-2026-31582, CVE-2026-31583,     CVE-2026-31584, CVE-2026-31585, CVE-2026-31586, CVE-2026-31587, CVE-2026-31588, CVE-2026-31589,     CVE-2026-31590, CVE-2026-31591, CVE-2026-31592, CVE-2026-31593, CVE-2026-31594, CVE-2026-31595,     CVE-2026-31596, CVE-2026-31597, CVE-2026-31598, CVE-2026-31599, CVE-2026-31600, CVE-2026-31601,     CVE-2026-31602, CVE-2026-31603, CVE-2026-31604, CVE-2026-31605, CVE-2026-31606, CVE-2026-31607,     CVE-2026-31608, CVE-2026-31609, CVE-2026-31610, CVE-2026-31611, CVE-2026-31612, CVE-2026-31613,     CVE-2026-31614, CVE-2026-31615, CVE-2026-31616, CVE-2026-31617, CVE-2026-31618, CVE-2026-31619,     CVE-2026-31620, CVE-2026-31621, CVE-2026-31622, CVE-2026-31623, CVE-2026-31624, CVE-2026-31625,     CVE-2026-31626, CVE-2026-31627, CVE-2026-31628, CVE-2026-31629, CVE-2026-31686, CVE-2026-31694,     CVE-2026-31696, CVE-2026-31697, CVE-2026-31698, CVE-2026-31699, CVE-2026-31700, CVE-2026-31701,     CVE-2026-31702, CVE-2026-31703, CVE-2026-31704, CVE-2026-31705, CVE-2026-31706, CVE-2026-31707,     CVE-2026-31708, CVE-2026-31709, CVE-2026-31710, CVE-2026-31711, CVE-2026-31712, CVE-2026-31713,     CVE-2026-31714, CVE-2026-31715, CVE-2026-31716, CVE-2026-31717, CVE-2026-31718, CVE-2026-31719,     CVE-2026-43058, CVE-2026-43071, CVE-2026-43072, CVE-2026-43073, CVE-2026-43348, CVE-2026-43349,     CVE-2026-43350, CVE-2026-43491, CVE-2026-43493, CVE-2026-43499, CVE-2026-43501, CVE-2026-45986,     CVE-2026-45987, CVE-2026-45988, CVE-2026-45989, CVE-2026-45990, CVE-2026-45991, CVE-2026-45994,     CVE-2026-45995, CVE-2026-45996, CVE-2026-45997, CVE-2026-45999, CVE-2026-46001, CVE-2026-46002,     CVE-2026-46003, CVE-2026-46004, CVE-2026-46005, CVE-2026-46006, CVE-2026-46007, CVE-2026-46008,     CVE-2026-46009, CVE-2026-46010, CVE-2026-46011, CVE-2026-46012, CVE-2026-46013, CVE-2026-46014,     CVE-2026-46015, CVE-2026-46016, CVE-2026-46018, CVE-2026-46019, CVE-2026-46020, CVE-2026-46021,     CVE-2026-46022, CVE-2026-46023, CVE-2026-46024, CVE-2026-46025, CVE-2026-46026, CVE-2026-46027,     CVE-2026-46028, CVE-2026-46029, CVE-2026-46030, CVE-2026-46031, CVE-2026-46032, CVE-2026-46033,     CVE-2026-46034, CVE-2026-46035, CVE-2026-46036, CVE-2026-46037, CVE-2026-46038, CVE-2026-46039,     CVE-2026-46040, CVE-2026-46041, CVE-2026-46042, CVE-2026-46043, CVE-2026-46044, CVE-2026-46045,     CVE-2026-46046, CVE-2026-46047, CVE-2026-46049, CVE-2026-46050, CVE-2026-46051, CVE-2026-46052,     CVE-2026-46053, CVE-2026-46054, CVE-2026-46056, CVE-2026-46057, CVE-2026-46058, CVE-2026-46059,     CVE-2026-46060, CVE-2026-46061, CVE-2026-46062, CVE-2026-46063, CVE-2026-46064, CVE-2026-46065,     CVE-2026-46066, CVE-2026-46067, CVE-2026-46068, CVE-2026-46069, CVE-2026-46070, CVE-2026-46071,     CVE-2026-46072, CVE-2026-46073, CVE-2026-46074, CVE-2026-46075, CVE-2026-46076, CVE-2026-46077,     CVE-2026-46078, CVE-2026-46079, CVE-2026-46080, CVE-2026-46081, CVE-2026-46082, CVE-2026-46083,     CVE-2026-46084, CVE-2026-46085, CVE-2026-46086, CVE-2026-46087, CVE-2026-46088, CVE-2026-46089,     CVE-2026-46090, CVE-2026-46091, CVE-2026-46092, CVE-2026-46093, CVE-2026-46094, CVE-2026-46095,     CVE-2026-46096, CVE-2026-46097, CVE-2026-46098, CVE-2026-46099, CVE-2026-46100, CVE-2026-46101,     CVE-2026-46102, CVE-2026-46103, CVE-2026-46115, CVE-2026-46119, CVE-2026-46135, CVE-2026-46137,     CVE-2026-46155, CVE-2026-46185, CVE-2026-46195, CVE-2026-46243, CVE-2026-46244, CVE-2026-46276,     CVE-2026-46277, CVE-2026-46278, CVE-2026-46279, CVE-2026-46280, CVE-2026-46281, CVE-2026-46282,     CVE-2026-46283, CVE-2026-46284, CVE-2026-46285, CVE-2026-46286, CVE-2026-46287, CVE-2026-46288,     CVE-2026-46289, CVE-2026-46316, CVE-2026-46332, CVE-2026-52904, CVE-2026-52905, CVE-2026-52906,     CVE-2026-52907, CVE-2026-52933)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - smb: server: fix active_num_conn leak on transport allocation failure Commit 77ffbcac4e56 (smb: server:
    fix leak of active_num_conn in ksmbd_tcp_new_connection()) addressed the kthread_run() failure path. The     earlier alloc_transport() == NULL path in the same function has the same leak, is reachable pre-     authentication via any TCP connect to port 445, and was empirically reproduced on UML (ARCH=um, v7.0-rc7):
    a small number of forced allocation failures were sufficient to put ksmbd into a state where every     subsequent connection attempt was rejected for the remainder of the boot. ksmbd_kthread_fn() increments     active_num_conn before calling ksmbd_tcp_new_connection() and discards the return value, so when     alloc_transport() returns NULL the socket is released and -ENOMEM returned without decrementing the     counter. Each such failure permanently consumes one slot from the max_connections pool; once cumulative     failures reach the cap, atomic_inc_return() hits the threshold on every subsequent accept and every new     connection is rejected. The counter is only reset by module reload. An unauthenticated remote attacker can     drive the server toward the memory pressure that makes alloc_transport() fail by holding open connections     with large RFC1002 lengths up to MAX_STREAM_PROT_LEN (0x00FFFFFF); natural transient allocation failures     on a loaded host produce the same drift more slowly. Mirror the existing rollback pattern in     ksmbd_kthread_fn(): on the alloc_transport() failure path, decrement active_num_conn gated on     server_conf.max_connections. Repro details: with the patch reverted, forced alloc_transport() NULL returns     leaked counter slots and subsequent connection attempts -- including legitimate connects issued after the     forced-fail window had closed -- were all rejected with Limit the maximum number of connections. With     this patch applied, the same connect sequence produces no rejections and the counter cycles cleanly     between zero and one on every accept. (CVE-2026-31711)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
365459	Ubuntu 22.04 LTS : Linux kernel (Azure CVM) vulnerabilities (USN-8876-1)	Nessus	Ubuntu Local Security Checks	Local	high
365382	Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-8875-1)	Nessus	Ubuntu Local Security Checks	Local	high
365381	Ubuntu 22.04 LTS : Linux kernel (GCP) vulnerabilities (USN-8877-1)	Nessus	Ubuntu Local Security Checks	Local	high
365377	Ubuntu 20.04 LTS : Linux kernel (Oracle) vulnerabilities (USN-8879-1)	Nessus	Ubuntu Local Security Checks	Local	high
365370	Ubuntu 20.04 LTS : Linux kernel (GCP) vulnerabilities (USN-8878-1)	Nessus	Ubuntu Local Security Checks	Local	high
463486	Echo: linux: security update to 6.1.176-1	Tenable Cloud Security	Echo Local Security Checks	Local	high
463486	Echo: linux: security update to 6.1.176-1	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
340680	Ubuntu 24.04 LTS / Pro Realtime 24.04 LTS : Linux kernel (Raspberry Pi) vulnerabilities (USN-8665-1)	Nessus	Ubuntu Local Security Checks	Local	high
334070	Photon OS 5.0: Linux PHSA-2026-5.0-92-0862	Nessus	PhotonOS Local Security Checks	Local	high
333798	Photon OS 5.0: Linux PHSA-2026-5.0-92-0849	Nessus	PhotonOS Local Security Checks	Local	high
332195	Photon OS 5.0: Linux PHSA-2026-5.0-90-0862	Nessus	PhotonOS Local Security Checks	Local	high
325421	Ubuntu 26.04 LTS : Linux kernel (NVIDIA) vulnerabilities (USN-8507-1)	Nessus	Ubuntu Local Security Checks	Local	low
325283	Debian dla-4671 : linux-config-6.1 - security update	Nessus	Debian Local Security Checks	Local	high
325059	Debian dla-4665 : affs-modules-6.1.0-48-4kc-malta-di - security update	Nessus	Debian Local Security Checks	Local	high
325017	Ubuntu 26.04 LTS : Linux kernel vulnerabilities (USN-8488-1)	Nessus	Ubuntu Local Security Checks	Local	low
319599	Photon OS 5.0: Linux PHSA-2026-5.0-0862	Nessus	PhotonOS Local Security Checks	Local	high
318365	Photon OS 5.0: Linux PHSA-2026-5.0-0849	Nessus	PhotonOS Local Security Checks	Local	high
311687	Linux Distros Unpatched Vulnerability : CVE-2026-31711	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-31711

high

Tenable Plugins

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