In the Linux kernel, the following vulnerability has been resolved: crypto: algif_skcipher - force synchronous processing on trees without ctx->state The AIO/async path in skcipher_recvmsg() passes the socket-wide ctx->iv directly into the skcipher request. After io_submit() the socket lock is dropped and the request is processed asynchronously, so a concurrent sendmsg(ALG_SET_IV) can overwrite ctx->iv and make the in-flight request run under an attacker-controlled IV. For CTR/stream modes this is IV/keystream reuse and lets an unprivileged user recover the plaintext of a concurrent operation. Snapshotting ctx->iv into per-request storage for the async path is not sufficient. For ciphers with statesize == 0 - which includes cbc and ctr - the MSG_MORE inter-chunk IV chaining is carried solely by the in-place req->iv writeback, which a snapshot redirects into per-request memory that af_alg_free_resources() releases on completion, silently producing wrong output. Writing the IV back from the completion callback instead is not possible either: that would require lock_sock() there, but the callback can run in softirq/atomic context, so it must not sleep. Make the operation synchronous instead, which removes both the IV race and any writeback race. This is equivalent to the upstream resolution, commit fcc77d33a34c ("net: Remove support for AIO on sockets"), which removed the AIO socket path across net/ entirely and so produces the same end state for this file. This patch deviates from that commit deliberately: rather than removing AIO socket support tree-wide, which would be far too invasive for stable, it removes only the AIO branch in crypto/algif_skcipher.c. io_submit() now completes synchronously; AF_ALG async is rarely used in practice. The -EIOCBQUEUED check in skcipher_recvmsg() is now dead but harmless, and is left alone to keep the fix minimal. Tested on 6.6.y: attacker IV injection dropped from 2296/200000 to 0/200000 after the change; MSG_MORE chunked CTR output bit-identical to single-shot.

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.

The remote Ubuntu 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8886-1 advisory.

    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:

    - NVDIMM (Non-Volatile Memory Device) drivers;

    - Handshake API;

    - ARM32 architecture;

    - ARM64 architecture;

    - MIPS architecture;

    - OpenRISC architecture;

    - PowerPC architecture;

    - S390 architecture;

    - x86 architecture;

    - Block layer subsystem;

    - Cryptographic API;

    - Intel NPU Driver;

    - Android drivers;

    - Rados block device (RBD) driver;

    - Bluetooth drivers;

    - Hardware random number generator core;

    - TPM device driver;

    - CPU frequency scaling framework;

    - Hardware crypto device drivers;

    - DMA engine subsystem;

    - FireWire subsystem;

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

    - GPIO subsystem;

    - GPU drivers;

    - HID subsystem;

    - Hardware monitoring drivers;

    - CoreSight HW tracing drivers;

    - I2C subsystem;

    - IIO ADC drivers;

    - IIO subsystem;

    - InfiniBand drivers;

    - Input Device core drivers;

    - Input Device (Mouse) drivers;

    - IOMMU subsystem;

    - Multiple devices driver;

    - Media drivers;

    - Multifunction device drivers;

    - Fastrpc Driver;

    - Amazon Nitro Secure Module driver;

    - MMC subsystem;

    - MTD block device drivers;

    - Ethernet bonding driver;

    - Network drivers;

    - Mellanox network drivers;

    - Texas Instruments network drivers;

    - NTB driver;

    - NVME drivers;

    - NVMEM (Non Volatile Memory) drivers;

    - Parport drivers;

    - Pin controllers subsystem;

    - x86 platform drivers;

    - i.MX PM domains;

    - System reset/shutdown drivers;

    - PTP clock framework;

    - Voltage and Current Regulator drivers;

    - S/390 drivers;

    - SCSI subsystem;

    - SPI subsystem;

    - Realtek RTL8723BS SDIO drivers;

    - VME bus staging drivers;

    - Thermal drivers;

    - Thunderbolt and USB4 drivers;

    - TTY drivers;

    - DesignWare USB2 driver;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - USB Dual Role (OTG-ready) Controller drivers;

    - USB Serial drivers;

    - USB Type-C Port Controller Manager driver;

    - vDPA drivers;

    - Virtio Host (VHOST) subsystem;

    - Framebuffer layer;

    - Watchdog drivers;

    - 9P distributed file system;

    - AFS file system;

    - File systems infrastructure;

    - BTRFS file system;

    - Ceph distributed file system;

    - EROFS file system;

    - exFAT file system;

    - F2FS file system;

    - FUSE (File system in Userspace);

    - Journaling layer for block devices (JBD2);

    - Network file system (NFS) client;

    - Network file system (NFS) server daemon;

    - NTFS3 file system;

    - OCFS2 file system;

    - Proc file system;

    - SMB network file system;

    - Tracing file system;

    - UDF file system;

    - XFS file system;

    - Key management;

    - BPF subsystem;

    - Control group (cgroup);

    - Glob pattern matching library;

    - MAC80211 subsystem;

    - Mellanox drivers;

    - Networking core;

    - Network sockets;

    - IPv6 networking;

    - Bluetooth subsystem;

    - Wireless networking;

    - IPv4 networking;

    - Netfilter;

    - Network traffic control;

    - SCTP protocol;

    - TCP network protocol;

    - XFRM subsystem;

    - RDMA verbs API;

    - io_uring subsystem;

    - IPC subsystem;

    - Audit subsystem;

    - Kernel CPU control infrastructure;

    - Perf events;

    - Kernel exit() syscall;

    - Kernel fork() syscall;

    - Scheduler infrastructure;

    - Signal handling mechanism;

    - Timer subsystem;

    - Tracing infrastructure;

    - Resizable hashtable library;

    - Memory management;

    - 6LoWPAN network protocol;

    - Asynchronous Transfer Mode (ATM) subsystem;

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

    - Ethernet bridge;

    - CAN network layer;

    - Ceph Core library;

    - Ethtool driver;

    - HSR network protocol;

    - IEEE802154.4 network protocol;

    - IUCV driver;

    - KCM (Kernel Connection Multiplexor) sockets driver;

    - IEEE 802.15.4 subsystem;

    - Multipath TCP;

    - Open vSwitch;

    - Packet sockets;

    - Phonet protocol;

    - Qualcomm IPC Router (QRTR);

    - RDS protocol;

    - RxRPC session sockets;

    - SMC sockets;

    - Sun RPC protocol;

    - TIPC protocol;

    - TLS protocol;

    - Unix domain sockets;

    - VMware vSockets driver;

    - X.25 network layer;

    - eXpress Data Path;

    - AppArmor security module;

    - Integrity Measurement Architecture(IMA) framework;

    - SELinux security module;

    - ALSA framework;

    - HD-audio driver;

    - QCOM ASoC drivers;

    - Simple audio multiplexer codec driver;

    - Texas InstrumentS Audio (ASoC/HDA) drivers;

    - SoC Audio for Freescale CPUs drivers;

    - Amlogic Meson SoC drivers;

    - SOF drivers;

    - NVIDIA Tegra ASoC drivers;

    - USB sound devices;

    - Perf tools;

    - KVM subsystem; (CVE-2025-37807, CVE-2026-23265, CVE-2026-43022, CVE-2026-46321, CVE-2026-46322,     CVE-2026-52917, CVE-2026-52923, CVE-2026-52927, CVE-2026-52929, CVE-2026-52935, CVE-2026-52942,     CVE-2026-52943, CVE-2026-52947, CVE-2026-52994, CVE-2026-53136, CVE-2026-53137, CVE-2026-53138,     CVE-2026-53143, CVE-2026-53146, CVE-2026-53147, CVE-2026-53149, CVE-2026-53156, CVE-2026-53157,     CVE-2026-53160, CVE-2026-53161, CVE-2026-53184, CVE-2026-53189, CVE-2026-53194, CVE-2026-53195,     CVE-2026-53199, CVE-2026-53202, CVE-2026-53205, CVE-2026-53209, CVE-2026-53223, CVE-2026-53229,     CVE-2026-53253, CVE-2026-53255, CVE-2026-53267, CVE-2026-53268, CVE-2026-53272, CVE-2026-53329,     CVE-2026-53330, CVE-2026-53356, CVE-2026-53362, CVE-2026-53365, CVE-2026-53366, CVE-2026-53381,     CVE-2026-53383, CVE-2026-53387, CVE-2026-53388, CVE-2026-53389, CVE-2026-53390, CVE-2026-53391,     CVE-2026-53392, CVE-2026-53397, CVE-2026-53400, CVE-2026-53401, CVE-2026-53402, CVE-2026-63794,     CVE-2026-63802, CVE-2026-63803, CVE-2026-63805, CVE-2026-63806, CVE-2026-63809, CVE-2026-63812,     CVE-2026-63814, CVE-2026-63816, CVE-2026-63817, CVE-2026-63819, CVE-2026-63823, CVE-2026-63824,     CVE-2026-63827, CVE-2026-63833, CVE-2026-63867, CVE-2026-63869, CVE-2026-63870, CVE-2026-63875,     CVE-2026-63879, CVE-2026-63881, CVE-2026-63884, CVE-2026-63889, CVE-2026-63909, CVE-2026-63913,     CVE-2026-63920, CVE-2026-63925, CVE-2026-63927, CVE-2026-63930, CVE-2026-63942, CVE-2026-63954,     CVE-2026-63968, CVE-2026-63970, CVE-2026-63971, CVE-2026-63985, CVE-2026-64002, CVE-2026-64003,     CVE-2026-64004, CVE-2026-64005, CVE-2026-64009, CVE-2026-64017, CVE-2026-64023, CVE-2026-64026,     CVE-2026-64036, CVE-2026-64095, CVE-2026-64123, CVE-2026-64188, CVE-2026-64189, CVE-2026-64210,     CVE-2026-64222, CVE-2026-64239, CVE-2026-64242, CVE-2026-64243, CVE-2026-64245, CVE-2026-64246,     CVE-2026-64266, CVE-2026-64270, CVE-2026-64271, CVE-2026-64272, CVE-2026-64273, CVE-2026-64274,     CVE-2026-64276, CVE-2026-64277, CVE-2026-64279, CVE-2026-64283, CVE-2026-64286, CVE-2026-64287,     CVE-2026-64296, CVE-2026-64298, CVE-2026-64299, CVE-2026-64304, CVE-2026-64312, CVE-2026-64317,     CVE-2026-64318, CVE-2026-64322, CVE-2026-64323, CVE-2026-64324, CVE-2026-64333, CVE-2026-64368,     CVE-2026-64372, CVE-2026-64374, CVE-2026-64375, CVE-2026-64378, CVE-2026-64379, CVE-2026-64380,     CVE-2026-64388, CVE-2026-64389, CVE-2026-64395, CVE-2026-64398, CVE-2026-64401, CVE-2026-64402,     CVE-2026-64403, CVE-2026-64411, CVE-2026-64412, CVE-2026-64413, CVE-2026-64418, CVE-2026-64420,     CVE-2026-64422, CVE-2026-64423, CVE-2026-64430, CVE-2026-64432, CVE-2026-64435, CVE-2026-64436,     CVE-2026-64440, CVE-2026-64442, CVE-2026-64443, CVE-2026-64444, CVE-2026-64448, CVE-2026-64449,     CVE-2026-64452, CVE-2026-64456, CVE-2026-64463, CVE-2026-64468, CVE-2026-64469, CVE-2026-64481,     CVE-2026-64496, CVE-2026-64524, CVE-2026-64532, CVE-2026-64533, CVE-2026-64536, CVE-2026-64539,     CVE-2026-64540, CVE-2026-64543, CVE-2026-64545, CVE-2026-64546, CVE-2026-64547, CVE-2026-64550,     CVE-2026-64556, CVE-2026-64560, CVE-2026-64563, CVE-2026-64567, CVE-2026-64568, CVE-2026-64570,     CVE-2026-64574, CVE-2026-64576, CVE-2026-64577, CVE-2026-64578, CVE-2026-64580, CVE-2026-64581,     CVE-2026-64582, CVE-2026-64583, CVE-2026-64584, CVE-2026-64585, CVE-2026-64599, CVE-2026-64600,     CVE-2026-68091, CVE-2026-68096, CVE-2026-68097, CVE-2026-68098, CVE-2026-68100, CVE-2026-68104,     CVE-2026-68106, CVE-2026-68107, CVE-2026-68108, CVE-2026-68116, CVE-2026-68118, CVE-2026-68119,     CVE-2026-68121, CVE-2026-68125, CVE-2026-68129, CVE-2026-68131, CVE-2026-68140, CVE-2026-68141,     CVE-2026-68142, CVE-2026-68143, CVE-2026-68145, CVE-2026-68148, CVE-2026-68149, CVE-2026-68153,     CVE-2026-68155, CVE-2026-68157, CVE-2026-68178, CVE-2026-68179, CVE-2026-68189, CVE-2026-68192,     CVE-2026-68196, CVE-2026-68199, CVE-2026-68202, CVE-2026-68204, CVE-2026-68216, CVE-2026-68219,     CVE-2026-68222, CVE-2026-68236, CVE-2026-68245, CVE-2026-68253, CVE-2026-68255, CVE-2026-68258,     CVE-2026-68260, CVE-2026-68262, CVE-2026-68263, CVE-2026-68266, CVE-2026-68273, CVE-2026-68284,     CVE-2026-68287, CVE-2026-68290, CVE-2026-68293, CVE-2026-68294, CVE-2026-68297, CVE-2026-68299,     CVE-2026-68314, CVE-2026-68315, CVE-2026-68320, CVE-2026-68322, CVE-2026-68323, CVE-2026-68326,     CVE-2026-68329, CVE-2026-68335, CVE-2026-68338, CVE-2026-68340, CVE-2026-68348, CVE-2026-68352,     CVE-2026-68353, CVE-2026-68354, CVE-2026-68370, CVE-2026-68371, CVE-2026-68373, CVE-2026-68376,     CVE-2026-68377, CVE-2026-68383, CVE-2026-68389, CVE-2026-68391, CVE-2026-68392, CVE-2026-68397,     CVE-2026-68398, CVE-2026-68399, CVE-2026-68400, CVE-2026-68401, CVE-2026-68402, CVE-2026-68404,     CVE-2026-68408, CVE-2026-68409, CVE-2026-68414, CVE-2026-68417, CVE-2026-68419, CVE-2026-68425,     CVE-2026-68432, CVE-2026-68433, CVE-2026-68442, CVE-2026-68445, CVE-2026-68446, CVE-2026-68447,     CVE-2026-68451, CVE-2026-68452, CVE-2026-68453, CVE-2026-68454, CVE-2026-68466, CVE-2026-68467,     CVE-2026-68471, CVE-2026-68474, CVE-2026-68479, CVE-2026-72005, CVE-2026-72009, CVE-2026-72012,     CVE-2026-72019, CVE-2026-72021, CVE-2026-72024, CVE-2026-72029, CVE-2026-72035, CVE-2026-72036,     CVE-2026-72045, CVE-2026-72049, CVE-2026-72051, CVE-2026-72052, CVE-2026-72053, CVE-2026-72054,     CVE-2026-72055, CVE-2026-72057, CVE-2026-72061, CVE-2026-72066, CVE-2026-72067, CVE-2026-72072,     CVE-2026-72089, CVE-2026-72099, CVE-2026-72102, CVE-2026-72105, CVE-2026-72107, CVE-2026-72108,     CVE-2026-72109, CVE-2026-72110, 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-2026-72133, CVE-2026-72135, CVE-2026-72136, CVE-2026-72144, CVE-2026-72146,     CVE-2026-72148, CVE-2026-72149, CVE-2026-72157, CVE-2026-72160, CVE-2026-72162, CVE-2026-72164,     CVE-2026-72165, CVE-2026-72170, CVE-2026-72171, CVE-2026-72172, CVE-2026-72175, CVE-2026-72181,     CVE-2026-72195, CVE-2026-72196, CVE-2026-72197, CVE-2026-72213, CVE-2026-72225, CVE-2026-72227,     CVE-2026-72231, CVE-2026-72232, CVE-2026-72233, CVE-2026-72235, CVE-2026-72242, CVE-2026-72243,     CVE-2026-72244, CVE-2026-72247, CVE-2026-72250, CVE-2026-72252, CVE-2026-72253, CVE-2026-72254,     CVE-2026-72261, CVE-2026-72262, CVE-2026-72282, CVE-2026-72284, CVE-2026-72297, CVE-2026-72298,     CVE-2026-72301, CVE-2026-72302, CVE-2026-72304, CVE-2026-72310, CVE-2026-72312, CVE-2026-72314,     CVE-2026-72330, CVE-2026-72334, CVE-2026-72335, CVE-2026-72338, CVE-2026-72340, CVE-2026-72342,     CVE-2026-72343, CVE-2026-72347, CVE-2026-72350, CVE-2026-72352, CVE-2026-72369, CVE-2026-72371,     CVE-2026-72373, CVE-2026-72374, CVE-2026-72375, CVE-2026-72378, CVE-2026-72382, CVE-2026-72389,     CVE-2026-72390, CVE-2026-72397, CVE-2026-72400, CVE-2026-72404, CVE-2026-72405, CVE-2026-72406,     CVE-2026-72409, CVE-2026-72410, CVE-2026-72416, CVE-2026-72418, CVE-2026-72419, CVE-2026-72420,     CVE-2026-72423, CVE-2026-72425, CVE-2026-72427, CVE-2026-72435, CVE-2026-72438, CVE-2026-72440,     CVE-2026-72444, CVE-2026-72449, CVE-2026-72450, CVE-2026-72459, CVE-2026-72460, CVE-2026-72464,     CVE-2026-72469, CVE-2026-72470, CVE-2026-72476, CVE-2026-72478, CVE-2026-72480, CVE-2026-72483,     CVE-2026-72485, CVE-2026-72492, CVE-2026-72502, CVE-2026-74256, CVE-2026-74257, CVE-2026-74258,     CVE-2026-74262, CVE-2026-74270, CVE-2026-74281, CVE-2026-74282, CVE-2026-74283, CVE-2026-74288,     CVE-2026-74289, CVE-2026-74292, CVE-2026-74293, CVE-2026-74294, CVE-2026-74295, CVE-2026-74296,     CVE-2026-74297, CVE-2026-74300, CVE-2026-74312, CVE-2026-74313, CVE-2026-74314, CVE-2026-74317,     CVE-2026-74321, CVE-2026-74330, CVE-2026-74334, CVE-2026-74338, CVE-2026-74340, CVE-2026-74341,     CVE-2026-74344, CVE-2026-74347, CVE-2026-74349, CVE-2026-74356, CVE-2026-74359, CVE-2026-74363,     CVE-2026-74365, CVE-2026-74374, CVE-2026-74375, CVE-2026-74377, CVE-2026-74378, CVE-2026-74380,     CVE-2026-74385, CVE-2026-74387, CVE-2026-74388, CVE-2026-74390, CVE-2026-74397, CVE-2026-74438,     CVE-2026-74443, CVE-2026-74444, CVE-2026-74446, CVE-2026-74450, CVE-2026-74453, CVE-2026-74454,     CVE-2026-74456, CVE-2026-74461, CVE-2026-74465, CVE-2026-74467, CVE-2026-74469, CVE-2026-74470,     CVE-2026-74471, CVE-2026-74479, CVE-2026-74481, CVE-2026-74482, CVE-2026-74485, CVE-2026-74488,     CVE-2026-74490, CVE-2026-74492, CVE-2026-74496, CVE-2026-74497, CVE-2026-74507, CVE-2026-74508,     CVE-2026-74509, CVE-2026-74510, CVE-2026-74512, CVE-2026-74515, CVE-2026-74516, CVE-2026-74518,     CVE-2026-74519, CVE-2026-74522, CVE-2026-74523, CVE-2026-74527, CVE-2026-74530, CVE-2026-74531,     CVE-2026-74533, CVE-2026-74534, CVE-2026-74535, CVE-2026-74536, CVE-2026-74537, CVE-2026-74540,     CVE-2026-74544, CVE-2026-74548, CVE-2026-74549, CVE-2026-74550, CVE-2026-74551, CVE-2026-74557,     CVE-2026-74563, CVE-2026-74564, CVE-2026-74565, CVE-2026-74567, CVE-2026-74572, CVE-2026-74574,     CVE-2026-74575, CVE-2026-74578, CVE-2026-74579, CVE-2026-74580, CVE-2026-74581, CVE-2026-74582,     CVE-2026-74583, CVE-2026-74584, CVE-2026-74586, CVE-2026-74587, CVE-2026-74588, CVE-2026-74589,     CVE-2026-74590, CVE-2026-74592, CVE-2026-74594, CVE-2026-74595, CVE-2026-74597, CVE-2026-74598,     CVE-2026-74601, CVE-2026-74603, CVE-2026-74604, CVE-2026-74605, CVE-2026-74606, CVE-2026-74607,     CVE-2026-74608, CVE-2026-74609, CVE-2026-74610, CVE-2026-74611, CVE-2026-74612, CVE-2026-74613,     CVE-2026-74614, CVE-2026-74615, CVE-2026-74616, CVE-2026-74621, CVE-2026-74624, CVE-2026-74625,     CVE-2026-74626, CVE-2026-74628, CVE-2026-74630, CVE-2026-74631, CVE-2026-74632, CVE-2026-74634,     CVE-2026-74635, CVE-2026-74637, CVE-2026-74641, CVE-2026-74646, CVE-2026-74647, CVE-2026-74648,     CVE-2026-74649, CVE-2026-74651, CVE-2026-74656, CVE-2026-74660, CVE-2026-74661, CVE-2026-74662,     CVE-2026-74663, CVE-2026-74666, CVE-2026-74667, CVE-2026-74668, CVE-2026-74669, CVE-2026-74670,     CVE-2026-74675, CVE-2026-74678, CVE-2026-74684, CVE-2026-74687, CVE-2026-74688, CVE-2026-74689,     CVE-2026-74690, CVE-2026-74691, CVE-2026-74692, CVE-2026-74695, CVE-2026-74696, CVE-2026-74697,     CVE-2026-74700, CVE-2026-74701, CVE-2026-74704, CVE-2026-74705, CVE-2026-74710, CVE-2026-74711,     CVE-2026-74713, CVE-2026-74714, CVE-2026-74715, CVE-2026-74717, CVE-2026-74720, CVE-2026-74723,     CVE-2026-74724, CVE-2026-74725, CVE-2026-74726, CVE-2026-74730, CVE-2026-74733, CVE-2026-74736,     CVE-2026-74737, CVE-2026-74739, CVE-2026-74743, CVE-2026-74744, CVE-2026-74746, CVE-2026-74747,     CVE-2026-74748, CVE-2026-74752, CVE-2026-80521, CVE-2026-80526, CVE-2026-80527, CVE-2026-80528,     CVE-2026-80536, CVE-2026-80540, CVE-2026-80541, CVE-2026-80547, CVE-2026-80548, CVE-2026-80549,     CVE-2026-80550, CVE-2026-80551, CVE-2026-80552, CVE-2026-80553, CVE-2026-80554, CVE-2026-80555,     CVE-2026-80556, CVE-2026-80557, CVE-2026-80558, CVE-2026-80559, CVE-2026-80560, CVE-2026-80561,     CVE-2026-80565, CVE-2026-80568, CVE-2026-80569, CVE-2026-80570, CVE-2026-80572, CVE-2026-80574,     CVE-2026-80576, CVE-2026-80578, CVE-2026-80579, CVE-2026-80580, CVE-2026-80583, CVE-2026-80584,     CVE-2026-80585, CVE-2026-80586, CVE-2026-80587, CVE-2026-80589, CVE-2026-80721, CVE-2026-80901,     CVE-2026-97509)

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 Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104542 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    crypto: algif_skcipher - force synchronous processing on trees without ctx->state

    The AIO/async path in skcipher_recvmsg() passes the socket-wide ctx->iv     directly into the skcipher request. After io_submit() the socket lock is     dropped and the request is processed asynchronously, so a concurrent     sendmsg(ALG_SET_IV) can overwrite ctx->iv and make the in-flight request     run under an attacker-controlled IV. For CTR/stream modes this is     IV/keystream reuse and lets an unprivileged user recover the plaintext of     a concurrent operation.

    Snapshotting ctx->iv into per-request storage for the async path is not     sufficient. For ciphers with statesize == 0 - which includes cbc and ctr -     the MSG_MORE inter-chunk IV chaining is carried solely by the in-place     req->iv writeback, which a snapshot redirects into per-request memory that     af_alg_free_resources() releases on completion, silently producing wrong     output. Writing the IV back from the completion callback instead is not     possible either: that would require lock_sock() there, but the callback can     run in softirq/atomic context, so it must not sleep.

    Make the operation synchronous instead, which removes both the IV race and     any writeback race. This is equivalent to the upstream resolution, commit     fcc77d33a34c (net: Remove support for AIO on sockets), which removed the     AIO socket path across net/ entirely and so produces the same end state for     this file. This patch deviates from that commit deliberately: rather than     removing AIO socket support tree-wide, which would be far too invasive for     stable, it removes only the AIO branch in crypto/algif_skcipher.c.
    io_submit() now completes synchronously; AF_ALG async is rarely used in     practice.

    The -EIOCBQUEUED check in skcipher_recvmsg() is now dead but harmless,     and is left alone to keep the fix minimal.

    Tested on 6.6.y: attacker IV injection dropped from 2296/200000 to 0/200000     after the change; MSG_MORE chunked CTR output bit-identical to single-shot.

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

Note that Nessus has not tested for this issue 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.

  - crypto: algif_skcipher - force synchronous processing on trees without ctx->state The AIO/async path in     skcipher_recvmsg() passes the socket-wide ctx->iv directly into the skcipher request. After io_submit()     the socket lock is dropped and the request is processed asynchronously, so a concurrent     sendmsg(ALG_SET_IV) can overwrite ctx->iv and make the in-flight request run under an attacker-controlled     IV. For CTR/stream modes this is IV/keystream reuse and lets an unprivileged user recover the plaintext of     a concurrent operation. Snapshotting ctx->iv into per-request storage for the async path is not     sufficient. For ciphers with statesize == 0 - which includes cbc and ctr - the MSG_MORE inter-chunk IV     chaining is carried solely by the in-place req->iv writeback, which a snapshot redirects into per-request     memory that af_alg_free_resources() releases on completion, silently producing wrong output. Writing the     IV back from the completion callback instead is not possible either: that would require lock_sock() there,     but the callback can run in softirq/atomic context, so it must not sleep. Make the operation synchronous     instead, which removes both the IV race and any writeback race. This is equivalent to the upstream     resolution, commit fcc77d33a34c (net: Remove support for AIO on sockets), which removed the AIO socket     path across net/ entirely and so produces the same end state for this file. This patch deviates from that     commit deliberately: rather than removing AIO socket support tree-wide, which would be far too invasive     for stable, it removes only the AIO branch in crypto/algif_skcipher.c. io_submit() now completes     synchronously; AF_ALG async is rarely used in practice. The -EIOCBQUEUED check in skcipher_recvmsg() is     now dead but harmless, and is left alone to keep the fix minimal. Tested on 6.6.y: attacker IV injection     dropped from 2296/200000 to 0/200000 after the change; MSG_MORE chunked CTR output bit-identical to     single-shot. (CVE-2026-74578)

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
365457	Ubuntu 24.04 LTS : Linux kernel (NVIDIA Tegra) vulnerabilities (USN-8886-1)	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
341880	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-2071)	Nessus	Amazon Linux Local Security Checks	Local	high
339569	Unity Linux 20.1050a Security Update: kernel (UTSA-2026-104542)	Nessus	Unity Linux Local Security Checks	Local	high
339536	Amazon Linux 2 : kernel (ALASKERNEL-5.15-2026-113)	Nessus	Amazon Linux Local Security Checks	Local	high
337518	Linux Distros Unpatched Vulnerability : CVE-2026-74578	Nessus	Misc.	Local	high
337239	Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-2057)	Nessus	Amazon Linux Local Security Checks	Local	high
337226	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-2058)	Nessus	Amazon Linux Local Security Checks	Local	high
337224	Amazon Linux 2 : kernel (ALASKERNEL-5.10-2026-129)	Nessus	Amazon Linux Local Security Checks	Local	high

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