In the Linux kernel, the following vulnerability has been resolved: scsi: xen: scsiback: Free unsubmitted command instead of double-putting it scsiback_get_pend_req() obtains a command tag and returns a vscsibk_pend whose embedded se_cmd has only been memset to 0, so its cmd_kref is 0; the se_cmd is initialised (kref_init() via target_init_cmd()) only later, in scsiback_cmd_exec(), on the successful VSCSIIF_ACT_SCSI_CDB path. The two error paths in scsiback_do_cmd_fn() taken before the command is submitted -- a failed scsiback_gnttab_data_map() and an unknown ring_req.act -- call transport_generic_free_cmd(&pending_req->se_cmd, 0), which kref_put()s a refcount of 0. That underflows it ("refcount_t: underflow; use-after-free") and, as the release function is not run, leaks the command tag. Impact: a pvSCSI guest can leak every command tag of a LUN's session, stopping the LUN, by submitting requests with a bad grant reference or an unknown request type; under panic_on_warn the refcount underflow panics the host. Add a helper that just returns the tag with target_free_tag() and sends the error response. It frees the tag while the v2p reference still pins the session, and snapshots the response fields beforehand because freeing the tag can let another ring reuse the pending_req slot.

The remote Ubuntu 24.04 LTS / 26.04 LTS / Pro Realtime 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8816-1 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:

    - ARM64 architecture;

    - S390 architecture;

    - x86 architecture;

    - DRBD Distributed Replicated Block Device drivers;

    - InfiniBand drivers;

    - IOMMU subsystem;

    - Multiple devices driver;

    - Network drivers;

    - Microsoft Azure Network Adapter (MANA) driver;

    - NVME drivers;

    - TCM subsystem;

    - Virtio Host (VHOST) subsystem;

    - Xen hypervisor drivers;

    - AFS file system;

    - File systems infrastructure;

    - Network file systems library;

    - Network file system (NFS) client;

    - NTFS3 file system;

    - OCFS2 file system;

    - OrangeFS file system;

    - SMB network file system;

    - IPv4 networking;

    - Sun RPC protocol;

    - IPv6 networking;

    - IP tunnels definitions;

    - Netfilter;

    - TCP network protocol;

    - Locking primitives;

    - 9P file system network protocol;

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

    - Networking core;

    - IFE protocol;

    - RxRPC session sockets;

    - Network traffic control;

    - SCTP protocol;

    - SMC sockets;

    - TIPC protocol;

    - XFRM subsystem; (CVE-2026-64530, CVE-2026-64534, CVE-2026-64535, CVE-2026-64541, CVE-2026-64551,     CVE-2026-68083, CVE-2026-68457, CVE-2026-68476, CVE-2026-68477, CVE-2026-72014, CVE-2026-72020,     CVE-2026-72033, CVE-2026-72041, CVE-2026-72046, CVE-2026-72064, CVE-2026-72065, CVE-2026-72069,     CVE-2026-72083, CVE-2026-72084, CVE-2026-72085, CVE-2026-72098, CVE-2026-72129, CVE-2026-72130,     CVE-2026-72137, CVE-2026-72139, CVE-2026-72191, CVE-2026-72192, CVE-2026-72194, CVE-2026-72217,     CVE-2026-72220, CVE-2026-72221, CVE-2026-72222, CVE-2026-72226, CVE-2026-72234, CVE-2026-72248,     CVE-2026-72249, CVE-2026-72251, CVE-2026-72277, CVE-2026-72278, CVE-2026-72279, CVE-2026-72287,     CVE-2026-72288, CVE-2026-72289, CVE-2026-72296, CVE-2026-72299, CVE-2026-72317, CVE-2026-72318,     CVE-2026-72319, CVE-2026-72320, CVE-2026-72322, CVE-2026-72323, CVE-2026-72329, CVE-2026-72339,     CVE-2026-72348, CVE-2026-72351, CVE-2026-72355, CVE-2026-72366, CVE-2026-72381, CVE-2026-72393,     CVE-2026-72398, CVE-2026-72399, CVE-2026-72412, CVE-2026-72417, CVE-2026-72422, CVE-2026-72429,     CVE-2026-72436, CVE-2026-72442, CVE-2026-72451, CVE-2026-72463, CVE-2026-72466, CVE-2026-72472,     CVE-2026-72473, CVE-2026-72477, CVE-2026-72491, CVE-2026-72493, CVE-2026-72494, CVE-2026-72495,     CVE-2026-72496, CVE-2026-72501, CVE-2026-74255, CVE-2026-74267, CVE-2026-74268, CVE-2026-74269,     CVE-2026-74287, CVE-2026-74310, CVE-2026-74345, CVE-2026-74350, CVE-2026-74361, CVE-2026-74376,     CVE-2026-74384, CVE-2026-74394, CVE-2026-74398, CVE-2026-74401, CVE-2026-74406, CVE-2026-74427,     CVE-2026-74428, CVE-2026-74433, CVE-2026-74434, CVE-2026-74436, CVE-2026-74439, CVE-2026-80665)

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 / Pro Realtime 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8781-1 advisory.

    It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB)     invalidation before memory writes made through the invalidated translation were globally observed. A local     attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing     memory protections or escalating privileges. (CVE-2025-10263)

    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;

    - User-space API (UAPI);

    - Kernel build system;

    - ARM32 architecture;

    - PowerPC architecture;

    - RISC-V architecture;

    - S390 architecture;

    - User-Mode Linux (UML);

    - x86 architecture;

    - Cryptographic API;

    - Intel NPU Driver;

    - Compute Acceleration Framework;

    - ACPI drivers;

    - Drivers core;

    - DRBD Distributed Replicated Block Device drivers;

    - Rados block device (RBD) driver;

    - Ublk userspace block driver;

    - Compressed RAM block device driver;

    - Bluetooth drivers;

    - Hardware crypto device drivers;

    - CXL (Compute Express Link) drivers;

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

    - EFI core;

    - FPGA Framework;

    - GPU drivers;

    - HID subsystem;

    - Hardware monitoring drivers;

    - I2C subsystem;

    - I3C subsystem;

    - InfiniBand drivers;

    - Input Device core drivers;

    - Input Device (Mouse) drivers;

    - IOMMU subsystem;

    - Multiple devices driver;

    - Media drivers;

    - Fastrpc Driver;

    - Network drivers;

    - Mellanox network drivers;

    - Microsoft Azure Network Adapter (MANA) driver;

    - MediaTek network drivers;

    - NVME drivers;

    - Operating Performance Points (OPP) driver;

    - PCI subsystem;

    - PTP clock framework;

    - RPMSG subsystem;

    - SCSI subsystem;

    - SoundWire subsystem;

    - SPI subsystem;

    - Greybus lights staging drivers;

    - Media staging drivers;

    - NVIDIA Tegra embedded controller (NVEC) staging driver;

    - Realtek RTL8723BS SDIO drivers;

    - TCM subsystem;

    - Trusted Execution Environment drivers;

    - Thunderbolt and USB4 drivers;

    - TTY drivers;

    - USB Gadget drivers;

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

    - USB Serial drivers;

    - vDPA drivers;

    - VFIO drivers;

    - Virtio Host (VHOST) subsystem;

    - Virtio drivers;

    - Xen hypervisor drivers;

    - 9P distributed file system;

    - AFS file system;

    - File systems infrastructure;

    - BTRFS file system;

    - Ceph distributed file system;

    - exFAT file system;

    - F2FS file system;

    - GFS2 file system;

    - HFS file system;

    - HFS+ file system;

    - JFS file system;

    - Network file systems library;

    - Network file system (NFS) client;

    - Network file system (NFS) server daemon;

    - NTFS3 file system;

    - OCFS2 file system;

    - OrangeFS file system;

    - SMB network file system;

    - BPF subsystem;

    - File system encryption (fscrypt);

    - Software nodes and device properties;

    - IPv4 networking;

    - KVM subsystem;

    - Mellanox drivers;

    - Memory management;

    - Networking core;

    - Netfilter;

    - Socket messages infrastructure;

    - MediaTek SoC drivers;

    - Sun RPC protocol;

    - Network traffic control;

    - IPv6 networking;

    - Amateur Radio drivers;

    - Bluetooth subsystem;

    - IP tunnels definitions;

    - KCM (Kernel Connection Multiplexor) sockets driver;

    - MultiProtocol Label Switching driver;

    - TCP network protocol;

    - XFRM subsystem;

    - Tracing infrastructure;

    - io_uring subsystem;

    - Control group (cgroup);

    - Perf events;

    - IRQ subsystem;

    - Locking primitives;

    - KProbes tracing;

    - 9P file system network protocol;

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

    - Ethernet bridge;

    - CAN network layer;

    - Ceph Core library;

    - Handshake API;

    - HSR network protocol;

    - IFE protocol;

    - L2TP protocol;

    - MAC80211 subsystem;

    - IEEE 802.15.4 subsystem;

    - Multipath TCP;

    - NFC subsystem;

    - Open vSwitch;

    - Phonet protocol;

    - RDS protocol;

    - RxRPC session sockets;

    - SCTP protocol;

    - SMC sockets;

    - TIPC protocol;

    - TLS protocol;

    - Unix domain sockets;

    - VMware vSockets driver;

    - Wireless networking;

    - X.25 network layer;

    - eXpress Data Path;

    - Rust bindings mechanism;

    - AppArmor security module;

    - Key management;

    - Linux Security Modules (LSM) Framework;

    - SELinux security module;

    - ALSA framework;

    - AudioScience HPI driver;

    - Intel ASoC drivers;

    - USB sound devices; (CVE-2024-14040, CVE-2024-35948, CVE-2024-41008, CVE-2024-43872, CVE-2024-44932,     CVE-2024-44964, CVE-2024-49932, CVE-2024-49940, CVE-2024-50106, CVE-2024-50217, CVE-2024-52560,     CVE-2024-53098, CVE-2024-56552, CVE-2024-56591, CVE-2024-57857, CVE-2024-58089, CVE-2024-58094,     CVE-2024-58098, CVE-2024-58100, CVE-2024-58241, CVE-2025-21687, CVE-2025-21693, CVE-2025-21984,     CVE-2025-21985, CVE-2025-22104, CVE-2025-22108, CVE-2025-22109, CVE-2025-23132, CVE-2025-37776,     CVE-2025-37876, CVE-2025-37906, CVE-2025-38064, CVE-2025-38069, CVE-2025-38187, CVE-2025-38204,     CVE-2025-38206, CVE-2025-38242, CVE-2025-38498, CVE-2025-38563, CVE-2025-38565, CVE-2025-38636,     CVE-2025-38717, CVE-2025-39677, CVE-2025-39789, CVE-2025-39859, CVE-2025-39862, CVE-2025-39896,     CVE-2025-39933, CVE-2025-39958, CVE-2025-39990, CVE-2025-40025, CVE-2025-40040, CVE-2025-40054,     CVE-2025-40064, CVE-2025-40074, CVE-2025-40075, CVE-2025-40139, CVE-2025-40158, CVE-2025-40168,     CVE-2025-40170, CVE-2025-40203, CVE-2025-40274, CVE-2025-40344, CVE-2025-40354, CVE-2025-68174,     CVE-2025-68304, CVE-2025-68360, CVE-2025-68745, CVE-2025-68822, CVE-2025-71073, CVE-2025-71074,     CVE-2025-71202, CVE-2025-71289, CVE-2026-23208, CVE-2026-23239, CVE-2026-23240, CVE-2026-23327,     CVE-2026-23393, CVE-2026-23469, CVE-2026-31420, CVE-2026-31479, CVE-2026-31486, CVE-2026-31493,     CVE-2026-31560, CVE-2026-31568, CVE-2026-31630, CVE-2026-31663, CVE-2026-31771, CVE-2026-43009,     CVE-2026-43029, CVE-2026-43042, CVE-2026-43048, CVE-2026-43101, CVE-2026-43116, CVE-2026-43126,     CVE-2026-43172, CVE-2026-43213, CVE-2026-43263, CVE-2026-43303, CVE-2026-43352, CVE-2026-43353,     CVE-2026-43464, CVE-2026-45850, CVE-2026-45894, CVE-2026-45932, CVE-2026-45944, CVE-2026-46054,     CVE-2026-46130, CVE-2026-46158, CVE-2026-46170, CVE-2026-46175, CVE-2026-46181, CVE-2026-46203,     CVE-2026-46275, CVE-2026-46315, CVE-2026-46320, CVE-2026-46324, CVE-2026-46330, CVE-2026-52908,     CVE-2026-52909, CVE-2026-52910, CVE-2026-52912, CVE-2026-52915, CVE-2026-52916, CVE-2026-52918,     CVE-2026-52919, CVE-2026-52921, CVE-2026-52922, CVE-2026-52926, CVE-2026-52934, CVE-2026-52941,     CVE-2026-52956, CVE-2026-52988, CVE-2026-52991, CVE-2026-53000, CVE-2026-53005, CVE-2026-53009,     CVE-2026-53024, CVE-2026-53025, CVE-2026-53053, CVE-2026-53070, CVE-2026-53078, CVE-2026-53089,     CVE-2026-53090, CVE-2026-53091, CVE-2026-53109, CVE-2026-53118, CVE-2026-53120, CVE-2026-53129,     CVE-2026-53131, CVE-2026-53132, CVE-2026-53133, CVE-2026-53148, CVE-2026-53159, CVE-2026-53182,     CVE-2026-53183, CVE-2026-53185, CVE-2026-53186, CVE-2026-53196, CVE-2026-53198, CVE-2026-53216,     CVE-2026-53217, CVE-2026-53221, CVE-2026-53230, CVE-2026-53232, CVE-2026-53239, CVE-2026-53250,     CVE-2026-53254, CVE-2026-53256, CVE-2026-53262, CVE-2026-53264, CVE-2026-53266, CVE-2026-53269,     CVE-2026-53270, CVE-2026-53273, CVE-2026-53275, CVE-2026-53281, CVE-2026-53284, CVE-2026-53354,     CVE-2026-53355, CVE-2026-53357, CVE-2026-53358, CVE-2026-53361, CVE-2026-53368, CVE-2026-53384,     CVE-2026-53398, CVE-2026-53399, CVE-2026-63795, CVE-2026-63796, CVE-2026-63797, CVE-2026-63800,     CVE-2026-63801, CVE-2026-63804, CVE-2026-63807, CVE-2026-63808, CVE-2026-63815, CVE-2026-63818,     CVE-2026-63825, CVE-2026-63828, CVE-2026-63829, CVE-2026-63830, CVE-2026-63831, CVE-2026-63853,     CVE-2026-63858, CVE-2026-63886, CVE-2026-63887, CVE-2026-63888, CVE-2026-63893, CVE-2026-63906,     CVE-2026-63912, CVE-2026-63914, CVE-2026-63915, CVE-2026-63916, CVE-2026-63917, CVE-2026-63919,     CVE-2026-63921, CVE-2026-63922, CVE-2026-63924, CVE-2026-63926, CVE-2026-63940, CVE-2026-63944,     CVE-2026-63945, CVE-2026-63946, CVE-2026-63947, CVE-2026-63948, CVE-2026-63952, CVE-2026-63974,     CVE-2026-63975, CVE-2026-63976, CVE-2026-63978, CVE-2026-63979, CVE-2026-63980, CVE-2026-63984,     CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64000, CVE-2026-64007, CVE-2026-64010,     CVE-2026-64011, CVE-2026-64015, CVE-2026-64018, CVE-2026-64025, CVE-2026-64029, CVE-2026-64032,     CVE-2026-64033, CVE-2026-64034, CVE-2026-64039, CVE-2026-64046, CVE-2026-64047, CVE-2026-64048,     CVE-2026-64051, CVE-2026-64055, CVE-2026-64056, CVE-2026-64064, CVE-2026-64073, CVE-2026-64076,     CVE-2026-64077, CVE-2026-64082, CVE-2026-64083, CVE-2026-64084, CVE-2026-64085, CVE-2026-64086,     CVE-2026-64087, CVE-2026-64088, CVE-2026-64089, CVE-2026-64091, CVE-2026-64092, CVE-2026-64093,     CVE-2026-64096, CVE-2026-64097, CVE-2026-64098, CVE-2026-64099, CVE-2026-64102, CVE-2026-64103,     CVE-2026-64106, CVE-2026-64108, CVE-2026-64109, CVE-2026-64111, CVE-2026-64112, CVE-2026-64113,     CVE-2026-64114, CVE-2026-64115, CVE-2026-64116, CVE-2026-64117, CVE-2026-64118, CVE-2026-64121,     CVE-2026-64125, CVE-2026-64126, CVE-2026-64127, CVE-2026-64128, CVE-2026-64133, CVE-2026-64134,     CVE-2026-64135, CVE-2026-64136, CVE-2026-64137, CVE-2026-64138, CVE-2026-64144, CVE-2026-64147,     CVE-2026-64148, CVE-2026-64153, CVE-2026-64155, CVE-2026-64160, CVE-2026-64163, CVE-2026-64165,     CVE-2026-64166, CVE-2026-64168, CVE-2026-64170, CVE-2026-64173, CVE-2026-64174, CVE-2026-64177,     CVE-2026-64178, CVE-2026-64179, CVE-2026-64180, CVE-2026-64182, CVE-2026-64183, CVE-2026-64184,     CVE-2026-64185, CVE-2026-64191, CVE-2026-64206, CVE-2026-64214, CVE-2026-64217, CVE-2026-64218,     CVE-2026-64219, CVE-2026-64220, CVE-2026-64221, CVE-2026-64225, CVE-2026-64231, CVE-2026-64237,     CVE-2026-64247, CVE-2026-64249, CVE-2026-64268, CVE-2026-64269, CVE-2026-64280, CVE-2026-64303,     CVE-2026-64313, CVE-2026-64315, CVE-2026-64319, CVE-2026-64320, CVE-2026-64355, CVE-2026-64361,     CVE-2026-64364, CVE-2026-64382, CVE-2026-64383, CVE-2026-64384, CVE-2026-64385, CVE-2026-64386,     CVE-2026-64387, CVE-2026-64390, CVE-2026-64391, CVE-2026-64392, CVE-2026-64393, CVE-2026-64394,     CVE-2026-64396, CVE-2026-64397, CVE-2026-64399, CVE-2026-64400, CVE-2026-64408, CVE-2026-64438,     CVE-2026-64441, CVE-2026-64445, CVE-2026-64450, CVE-2026-64475, CVE-2026-64510, CVE-2026-64518,     CVE-2026-64523, CVE-2026-64529, CVE-2026-64530, CVE-2026-64534, CVE-2026-64535, CVE-2026-64541,     CVE-2026-64548, CVE-2026-64551, CVE-2026-64552, CVE-2026-64554, CVE-2026-64555, CVE-2026-64557,     CVE-2026-64561, CVE-2026-64562, CVE-2026-64564, CVE-2026-64586, CVE-2026-64597, CVE-2026-64598,     CVE-2026-68082, CVE-2026-68083, CVE-2026-68117, CVE-2026-68123, CVE-2026-68124, CVE-2026-68127,     CVE-2026-68136, CVE-2026-68137, CVE-2026-68138, CVE-2026-68144, CVE-2026-68147, CVE-2026-68152,     CVE-2026-68154, CVE-2026-68156, CVE-2026-68158, CVE-2026-68159, CVE-2026-68160, CVE-2026-68161,     CVE-2026-68162, CVE-2026-68198, CVE-2026-68206, CVE-2026-68209, CVE-2026-68210, CVE-2026-68213,     CVE-2026-68228, CVE-2026-68229, CVE-2026-68300, CVE-2026-68302, CVE-2026-68343, CVE-2026-68381,     CVE-2026-68388, CVE-2026-68426, CVE-2026-68431, CVE-2026-68457, CVE-2026-68461, CVE-2026-68470,     CVE-2026-68476, CVE-2026-68477, CVE-2026-72014, CVE-2026-72020, CVE-2026-72033, CVE-2026-72041,     CVE-2026-72065, CVE-2026-72069, CVE-2026-72071, CVE-2026-72083, CVE-2026-72084, CVE-2026-72085,     CVE-2026-72098, CVE-2026-72111, CVE-2026-72124, CVE-2026-72125, CVE-2026-72126, CVE-2026-72129,     CVE-2026-72130, CVE-2026-72191, CVE-2026-72192, CVE-2026-72194, CVE-2026-72200, CVE-2026-72217,     CVE-2026-72221, CVE-2026-72222, CVE-2026-72226, CVE-2026-72234, CVE-2026-72251, CVE-2026-72255,     CVE-2026-72288, CVE-2026-72289, CVE-2026-72296, CVE-2026-72299, CVE-2026-72317, CVE-2026-72318,     CVE-2026-72319, CVE-2026-72320, CVE-2026-72322, CVE-2026-72323, CVE-2026-72329, CVE-2026-72339,     CVE-2026-72348, CVE-2026-72351, CVE-2026-72380, CVE-2026-72383, CVE-2026-72398, CVE-2026-72399,     CVE-2026-72421, CVE-2026-72422, CVE-2026-72434, CVE-2026-72436, CVE-2026-72451, CVE-2026-72454,     CVE-2026-72466, CVE-2026-72472, CVE-2026-72473, CVE-2026-72487, CVE-2026-72488, CVE-2026-72489,     CVE-2026-72491, CVE-2026-72494, CVE-2026-72495, CVE-2026-72496, CVE-2026-72499, CVE-2026-74255,     CVE-2026-74264, CVE-2026-74267, CVE-2026-74268, CVE-2026-74269, CVE-2026-74279, CVE-2026-74280,     CVE-2026-74287, CVE-2026-74302, CVE-2026-74305, CVE-2026-74310, CVE-2026-74345, CVE-2026-74350,     CVE-2026-74376, CVE-2026-74384, CVE-2026-74394, CVE-2026-74398, CVE-2026-74401, CVE-2026-74405,     CVE-2026-74406, CVE-2026-74407, CVE-2026-74408, CVE-2026-74410, CVE-2026-74411, CVE-2026-74417,     CVE-2026-74427, CVE-2026-74436, CVE-2026-74439, CVE-2026-74440, CVE-2026-74473, CVE-2026-74474,     CVE-2026-74475, CVE-2026-74476, CVE-2026-74478, CVE-2026-74480, CVE-2026-74493, CVE-2026-74495,     CVE-2026-74521, CVE-2026-74538, CVE-2026-74541, CVE-2026-74556, CVE-2026-74569)

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 Oracle Linux 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-500249 advisory.

    - inet: frags: strip GSO state from fragments before reassembly (Xinyang Ge)  [Orabug: 39974835]     {CVE-2026-80590}
    - KVM: x86/mmu: Stop needlessly making MMU pages available for TDP MMU faults (David Matlack) [Orabug:
    39830590] {CVE-2026-64561}
    - KVM: x86: Check for invalid/obsolete root *after* making MMU pages available (Sean Christopherson)     [Orabug: 39830590,39832946] {CVE-2026-64561}
    - KVM: x86/mmu: Rename __direct_map() to direct_map() (David Matlack) [Orabug: 39830590] {CVE-2026-64561}
    - KVM: x86/mmu: Split out TDP MMU page fault handling (David Matlack) [Orabug: 39830590] {CVE-2026-64561}
    - KVM: Rename mmu_notifier_* to mmu_invalidate_* (Chao Peng) [Orabug: 39830590] {CVE-2026-64561}
    - KVM: x86/mmu: Document the 'rules' for using host_pfn_mapping_level() (Sean Christopherson) [Orabug:
    39830590] {CVE-2026-64561}
    - KVM: x86/mmu: Rename pte_list_{destroy,remove}() to show they zap SPTEs (Sean Christopherson) [Orabug:
    39830590] {CVE-2026-64561}
    - KVM: x86/mmu: Directly 'destroy' PTE list when recycling rmaps (Sean Christopherson) [Orabug: 39830590]     {CVE-2026-64561}
    - x86/bugs: Make Safe-RET robust against interrupt injection (Borislav Petkov) [Orabug: 39784615,39853775]     {CVE-2026-68480}
    - x86/alternatives: Disable interrupts and sync when optimizing NOPs in place (Thomas Gleixner) [Orabug:
    39784615] {CVE-2026-68480}
    - x86/alternative: Support relocations in alternatives (Peter Zijlstra) [Orabug: 39784615]     {CVE-2026-68480}
    - x86/alternative: Make debug-alternative selective (Peter Zijlstra) [Orabug: 39784615] {CVE-2026-68480}
    - x86/alternatives: Add alt_instr.flags (Borislav Petkov) [Orabug: 39784615] {CVE-2026-68480}
    - x86/asm: Provide ALTERNATIVE_3 (Peter Zijlstra) [Orabug: 39784615] {CVE-2026-68480}
    - posix-cpu-timers: Prevent UAF caused by non-leader exec() race (Thomas Gleixner) [Orabug: 39807438]     {CVE-2026-64560}
    - ALSA: seq: Fix uninitialised heap leak in snd_seq_event_dup() (Hyeongjun An) [Orabug: 39853280]     {CVE-2026-64479}
    - crypto: qat - validate RSA CRT component lengths (Giovanni Cabiddu) [Orabug: 39785885] {CVE-2026-64304}
    - btrfs: do not trim a device which is not writeable (Qu Wenruo) [Orabug: 39843586] {CVE-2026-64593}
    - bpf: Allow LPM map access from sleepable BPF programs (Vlad Poenaru) [Orabug: 39786046] {CVE-2026-64352}
    - bpf: Reject fragmented frames in devmap (Zhao Zhang) [Orabug: 39786052] {CVE-2026-64355}
    - HID: appleir: fix UAF on pending key_up_timer in remove() (Manish Khadka) [Orabug: 39786074]     {CVE-2026-64363}
    - proc: protect ptrace_may_access() with exec_update_lock (part 1) (Jann Horn) [Orabug: 39786095]     {CVE-2026-64371}
    - HID: multitouch: fix out-of-bounds bit access on mt_io_flags (Trung Nguyen) [Orabug: 39786078]     {CVE-2026-64364}
    - proc: protect ptrace_may_access() with exec_update_lock (FD links) (Jann Horn) [Orabug: 39786112]     {CVE-2026-64375}
    - smb: client: harden POSIX SID length parsing (Zihan Xi) [Orabug: 39786128] {CVE-2026-64380}
    - smb: client: mask server-provided mode to 07777 in modefromsid (Norbert Manthey) [Orabug: 39786124]     {CVE-2026-64379}
    - smb: client: resolve SWN tcon from live registrations (Michael Bommarito) [Orabug: 39786200]     {CVE-2026-64401}
    - smb: client: Fix next buffer leak in receive_encrypted_standard() (Haoxiang Li) [Orabug: 39786131]     {CVE-2026-64381}
    - Bluetooth: L2CAP: cancel pending_rx_work before taking conn->lock (Runyu Xiao) [Orabug: 39760901]     {CVE-2026-64206}
    - netfilter: ebtables: zero chainstack array (Florian Westphal) [Orabug: 39786232] {CVE-2026-64413}
    - staging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr()     (Alexandru Hossu) [Orabug: 39786307] {CVE-2026-64441}
    - PCI: mediatek: Fix IRQ domain leak when port fails to enable (Manivannan Sadhasivam) [Orabug: 39786366]     {CVE-2026-64461}
    - staging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie() (Alexandru Hossu) [Orabug:
    39786327] {CVE-2026-64446}
    - smb: client: restrict implied bcc[0] exemption to responses without data area (Shoichiro Miyamoto)     [Orabug: 39786332] {CVE-2026-64448}
    - vfio/pci: Release the VGA arbiter client on register_device() failure (Alex Williamson) [Orabug:
    39786409] {CVE-2026-64475}
    - ACPI: NFIT: core: Fix acpi_nfit_init() error cleanup (Rafael J. Wysocki) [Orabug: 39786502]     {CVE-2026-64510}
    - ACPI: CPPC: Suppress UBSAN warning caused by field misuse (Jeremy Linton) [Orabug: 39786508]     {CVE-2026-64512}
    - net: openvswitch: reject oversized nested action attrs (Asim Viladi Oglu Manizada) [Orabug:
    39789564,39816016,39819143] {CVE-2026-64531}
    - nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path (Shivam Kumar) [Orabug:
    39789573] {CVE-2026-64534}
    - sctp: validate STALE_COOKIE cause length before reading staleness (Weiming Shi) [Orabug: 39794431]     {CVE-2026-64551}
    - netfilter: bridge: fix stale prevhdr pointer in br_ip6_fragment() (Xiang Mei) [Orabug: 39794442]     {CVE-2026-64554}
    - Bluetooth: bpa10x: avoid OOB read of revision string in bpa10x_setup() (Weiming Shi) [Orabug: 39794421]     {CVE-2026-64549}
    - net: usb: net1080: validate packet_len before pad-byte access in rx_fixup (Xiang Mei) [Orabug: 39794412]     {CVE-2026-64547}
    - usbnet: gl620a: fix out-of-bounds read in genelink_rx_fixup() (Xiang Mei) [Orabug: 39794387]     {CVE-2026-64540}
    - net/sched: cls_api: Handle TC_ACT_CONSUMED in tcf_qevent_handle (Jamal Hadi Salim) [Orabug: 39787017]     {CVE-2026-64530}
    - net, bpf: check master for NULL in xdp_master_redirect() (Xiang Mei) [Orabug: 39794405] {CVE-2026-64545}
    - ipv6: Fix null-ptr-deref in fib6_nh_mtu_change(). (Xiang Mei) [Orabug: 39794379] {CVE-2026-64538}
    - drm/edid: fix OOB read in drm_parse_tiled_block() (Xiang Mei) [Orabug: 39794408] {CVE-2026-64546}
    - net: psample: fix info leak in PSAMPLE_ATTR_DATA (Jakub Kicinski) [Orabug: 39794438] {CVE-2026-64553}
    - bpf, sockmap: reject overflowing copy + len in bpf_msg_push_data() (Weiming Shi) [Orabug: 39794417]     {CVE-2026-64548}
    - crypto: asymmetric_keys - fix OOB read in pefile_digest_pe_contents (Weiming Shi) [Orabug: 39794401]     {CVE-2026-64544}
    - xfs: fail recovery on a committed log item with no regions (Weiming Shi) [Orabug: 39760871]     {CVE-2026-64187}
    - fuse: re-lock request before returning from fuse_ref_folio() (Joanne Koong) [Orabug: 39785786]     {CVE-2026-64266}
    - Input: touchwin - reset the packet index on every complete packet (Bryam Vargas) [Orabug: 39785802]     {CVE-2026-64271}
    - Input: elan_i2c - prevent division by zero and arithmetic underflow (Ranjan Kumar) [Orabug: 39785819]     {CVE-2026-64275}
    - Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count (Bryam Vargas) [Orabug: 39785823]     {CVE-2026-64276}
    - i2c: core: fix adapter deregistration race (Johan Hovold) [Orabug: 39785831] {CVE-2026-64279}
    - KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is in guest mode (Sean Christopherson)     [Orabug: 39843616] {CVE-2026-64604}
    - exfat: bound uniname advance in exfat_find_dir_entry() (Bryam Vargas) [Orabug: 39785863]     {CVE-2026-64296}
    - NFSv4: include MAY_WRITE in open permission mask for O_TRUNC (Benjamin Coddington) [Orabug: 39785868]     {CVE-2026-64298}
    - tracing: Prevent out-of-bounds read in glob matching (Huihui Huang) [Orabug: 39785872] {CVE-2026-64299}
    - crypto: drbg - Fix returning success on failure in CTR_DRBG (Eric Biggers) [Orabug: 39785893]     {CVE-2026-64306}
    - crypto: pcrypt - restore callback for non-parallel fallback (Ruijie Li) [Orabug: 39785906]     {CVE-2026-64312}
    - crypto: ecc - Fix carry overflow in vli multiplication (Anastasia Tishchenko) [Orabug: 39785910]     {CVE-2026-64313}
    - isofs: bound Rock Ridge symlink components to the SL record (Bryam Vargas) [Orabug: 39785923]     {CVE-2026-64317}
    - udf: validate sparing table length as an entry count, not a byte count (Bryam Vargas) [Orabug: 39785940]     {CVE-2026-64322}
    - udf: validate VAT header length against the VAT inode size (Bryam Vargas) [Orabug: 39785944]     {CVE-2026-64323}
    - udf: validate free block extents against the partition length (Michael Bommarito) [Orabug: 39785948]     {CVE-2026-64324}
    - usb: typec: tcpm: Validate SVID index in svdm_consume_modes() (Badhri Jagan Sridharan) [Orabug:
    39785963] {CVE-2026-64330}
    - usbip: vudc: fix NULL deref in vep_dequeue() (Sam Day) [Orabug: 39785967] {CVE-2026-64331}
    - USB: ulpi: fix memory leak on registration failure (Johan Hovold) [Orabug: 39785971] {CVE-2026-64332}
    - USB: serial: digi_acceleport: fix write buffer corruption (Johan Hovold) [Orabug: 39785975]     {CVE-2026-64333}
    - USB: serial: digi_acceleport: fix hard lockup on disconnect (Johan Hovold) [Orabug: 39785979]     {CVE-2026-64334}
    - USB: serial: digi_acceleport: fix broken rx after throttle (Johan Hovold) [Orabug: 39785983]     {CVE-2026-64335}
    - USB: serial: keyspan_pda: fix information leak (Johan Hovold) [Orabug: 39785987] {CVE-2026-64336}
    - USB: misc: uss720: unregister parport on probe failure (Myeonghun Pak) [Orabug: 39785994]     {CVE-2026-64338}
    - USB: legousbtower: fix use-after-free on disconnect race (Johan Hovold) [Orabug: 39785999]     {CVE-2026-64340}
    - USB: iowarrior: fix use-after-free on disconnect (Johan Hovold) [Orabug: 39786007] {CVE-2026-64342}
    - USB: ldusb: fix use-after-free on disconnect race (Johan Hovold) [Orabug: 39786012] {CVE-2026-64343}
    - USB: idmouse: fix use-after-free on disconnect race (Johan Hovold) [Orabug: 39786017] {CVE-2026-64344}
    - usb: gadget: udc: Fix use-after-free in gadget_match_driver (Jimmy Hu) [Orabug: 39786026]     {CVE-2026-64346}
    - usb: gadget: composite: fix dead empty check in the USB_DT_OTG handler (Maoyi Xie) [Orabug: 39786030]     {CVE-2026-64347}
    - net: usb: kalmia: bound RX frame length in kalmia_rx_fixup() (Maoyi Xie) [Orabug: 39786042]     {CVE-2026-64351}
    - HID: lg-g15: cancel pending work on remove to fix a use-after-free (Maoyi Xie) [Orabug: 39786071]     {CVE-2026-64362}
    - HID: wacom: stop hardware after post-start probe failures (Myeonghun Pak) [Orabug: 39859299]     {CVE-2026-68091}
    - posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path (Xu Wang) [Orabug: 39786091]     {CVE-2026-64370}
    - cpufreq: pcc: fix use-after-free and double free in _OSC evaluation (Yuho Choi) [Orabug: 39786100]     {CVE-2026-64372}
    - cpufreq: Fix hotplug-suspend race during reboot (Tianxiang Chen) [Orabug: 39786104] {CVE-2026-64373}
    - sched/rt: Have RT_PUSH_IPI be default off for non PREEMPT_RT (Steven Rostedt) [Orabug: 39786108]     {CVE-2026-64374}
    - net: Drop the lock in skb_may_tx_timestamp() (Sebastian Andrzej Siewior) [Orabug: 39331701]     {CVE-2026-43216}
    - Bluetooth: L2CAP: validate option length before reading conf opt value (Muhammad Bilal) [Orabug:
    39786205] {CVE-2026-64403}
    - Bluetooth: fix UAF in bt_accept_dequeue() (Yousef Alhouseen) [Orabug: 39786578] {CVE-2026-64406}
    - Bluetooth: bnep: pin L2CAP connection during netdev registration (Yousef Alhouseen) [Orabug: 39786217]     {CVE-2026-64408}
    - netfilter: ebtables: terminate table name before find_table_lock() (Xiang Mei) [Orabug: 39786224]     {CVE-2026-64411}
    - netfilter: ebtables: module names must be null-terminated (Florian Westphal) [Orabug: 39786228]     {CVE-2026-64412}
    - mfd: cros_ec: Delay dev_set_drvdata() until probe success (Andrei Kuchynski) [Orabug: 39786248]     {CVE-2026-64420}
    - net: ipv4: bound TCP reordering sysctl writes and MTU probe sizes (Wyatt Feng) [Orabug: 39786254]     {CVE-2026-64422}
    - ipv4: igmp: remove multicast group from hash table on device destruction (Yuyang Huang) [Orabug:
    39786259] {CVE-2026-64423}
    - io_uring/io-wq: re-check IO_WQ_BIT_EXIT for each linked work item (Runyu Xiao) [Orabug: 39786574]     {CVE-2026-64425}
    - audit: Fix data races of skb_queue_len() readers on audit_queue (Chi Wang) [Orabug: 39786289]     {CVE-2026-64435}
    - net: af_key: initialize alg_key_len for IPComp states (Zijing Yin) [Orabug: 39786293] {CVE-2026-64436}
    - crypto: amlogic - avoid double cleanup in meson_crypto_probe() (Dawei Feng) [Orabug: 39843604]     {CVE-2026-64599}
    - staging: rtl8723bs: fix OOB write in HT_caps_handler() (Alexandru Hossu) [Orabug: 39786303]     {CVE-2026-64440}
    - staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop (Alexandru Hossu) [Orabug: 39789581]     {CVE-2026-64536}
    - staging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hdl() (Alexandru Hossu)     [Orabug: 39786311] {CVE-2026-64442}
    - staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop (Alexandru Hossu) [Orabug: 39786315]     {CVE-2026-64443}
    - staging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop (Alexandru Hossu) [Orabug: 39786319]     {CVE-2026-64444}
    - staging: rtl8723bs: fix WEP length underflow and OOB read in OnAuth() (Alexandru Hossu) [Orabug:
    39786323] {CVE-2026-64445}
    - tipc: fix out-of-bounds read in broadcast Gap ACK blocks (Samuel Page) [Orabug: 39786340]     {CVE-2026-64450}
    - 6lowpan: fix NHC entry use-after-free on error path (Yizhou Zhao) [Orabug: 39786344] {CVE-2026-64452}
    - usb: dwc3: run gadget disconnect from sleepable suspend context (Runyu Xiao) [Orabug: 39786349]     {CVE-2026-64454}
    - USB: chaoskey: Fix slab-use-after-free in chaoskey_release() (Alan Stern) [Orabug: 39786352]     {CVE-2026-64455}
    - hwrng: virtio: clamp device-reported used.len at copy_data() (Michael Bommarito) [Orabug: 39786356]     {CVE-2026-64456}
    - netfilter: ipset: fix race between dump and ip_set_list resize (Xiang Mei) [Orabug: 39760883]     {CVE-2026-64189}
    - usb: xhci: Fix sleep in atomic context in xhci_free_streams() (Lianqin Hu) [Orabug: 39786379]     {CVE-2026-64465}
    - Bluetooth: btusb: fix use-after-free on marvell probe failure (Johan Hovold) [Orabug: 39786393]     {CVE-2026-64470}
    - Bluetooth: btusb: fix use-after-free on registration failure (Johan Hovold) [Orabug: 39786397]     {CVE-2026-64471}
    - ALSA: usb-audio: avoid kobject path lookup in DualSense match (Darvell Long) [Orabug: 39786416]     {CVE-2026-64478}
    - ALSA: firewire: isight: bound the sample count to the packet payload (Maoyi Xie) [Orabug: 39786428]     {CVE-2026-64483}
    - ALSA: es1938: check snd_ctl_new1() return value (Zhao Dongdong) [Orabug: 39786432] {CVE-2026-64484}
    - ALSA: caiaq: fix out-of-bounds read in the Traktor Kontrol S4 input parser (Maoyi Xie) [Orabug:
    39786439] {CVE-2026-64487}
    - iio: event: Fix event FIFO reset race (Lars-Peter Clausen) [Orabug: 39786462] {CVE-2026-64496}
    - iio: accel: kxsd9: fix runtime PM imbalance on write_raw() error (Biren Pandya) [Orabug: 39786478]     {CVE-2026-64503}
    - iio: accel: bmc150: clamp the device-reported FIFO frame count (Bryam Vargas) [Orabug: 39786482]     {CVE-2026-64504}
    - NFSv4/flexfiles: reject zero filehandle version count (Michael Bommarito) [Orabug: 39753894]     {CVE-2026-53392}
    - fbdev: fbcon: fix out-of-bounds read in err_out of fbcon_do_set_font() (Mingyu Wang) [Orabug: 39753924]     {CVE-2026-53402}
    - i2c: core: fix adapter registration race (Johan Hovold) [Orabug: 39753916] {CVE-2026-53400}
    - block: Avoid mounting the bdev pseudo-filesystem in userspace (Denis Arefev) [Orabug: 39753985]     {CVE-2026-63810}
    - net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink (Maoyi Xie) [Orabug: 39754045]     {CVE-2026-63829}
    - net: skmsg: preserve sg.copy across SG transforms (Yiming Qian) [Orabug: 39754049] {CVE-2026-63830}
    - netfilter: nf_tables: restore set elements when delete set fails (Pablo Neira Ayuso) [Orabug: 36598010]     {CVE-2024-27012}
    - KVM: Replace guest-triggerable BUG_ON() in ioeventfd datamatch with get_unaligned() (Sean     Christopherson) [Orabug: 39753972] {CVE-2026-63806}
    - userfaultfd: gate must_wait writability check on pte_present() (Kiryl Shutsemau) [Orabug: 39786515]     {CVE-2026-64514}
    - nfsd: reset write verifier on deferred writeback errors (Jeff Layton) [Orabug: 39753898]     {CVE-2026-53393}
    - nfsd: release layout stid on setlease failure (Chris Mason) [Orabug: 39753912] {CVE-2026-53399}
    - nvmet-tcp: fix race between ICReq handling and queue teardown (Chaitanya Kulkarni) [Orabug: 39460310]     {CVE-2026-46135}
    - net: tap: set skb->dev before parsing virtio net header in tap_get_user_xdp() (Dongli Zhang) [Orabug:
    39558744] {CVE-2026-74684}
    - net/rds: zero per-item info buffer before handing it to visitors (Michael Bommarito) [Orabug:
    39621715,39638197] {CVE-2026-52995}
    - x86/sev: Evict cache lines during SNP memory validation (Tom Lendacky) [Orabug: 38334919]     {CVE-2025-38560}
    - xfs: resample the data fork mapping after cycling ILOCK (Darrick Wong) [Orabug: 39776791]     {CVE-2026-64600}

Tenable has extracted the preceding description block directly from the Oracle Linux 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.

  - scsi: xen: scsiback: Free unsubmitted command instead of double-putting it scsiback_get_pend_req() obtains     a command tag and returns a vscsibk_pend whose embedded se_cmd has only been memset to 0, so its cmd_kref     is 0; the se_cmd is initialised (kref_init() via target_init_cmd()) only later, in scsiback_cmd_exec(), on     the successful VSCSIIF_ACT_SCSI_CDB path. The two error paths in scsiback_do_cmd_fn() taken before the     command is submitted -- a failed scsiback_gnttab_data_map() and an unknown ring_req.act -- call     transport_generic_free_cmd(&pending_req->se_cmd, 0), which kref_put()s a refcount of 0. That underflows it     (refcount_t: underflow; use-after-free) and, as the release function is not run, leaks the command tag.
    Impact: a pvSCSI guest can leak every command tag of a LUN's session, stopping the LUN, by submitting     requests with a bad grant reference or an unknown request type; under panic_on_warn the refcount underflow     panics the host. Add a helper that just returns the tag with target_free_tag() and sends the error     response. It frees the tag while the v2p reference still pins the session, and snapshots the response     fields beforehand because freeing the tag can let another ring reuse the pending_req slot.
    (CVE-2026-72085)

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

An update of the linux package has been released.

ID	Name	Product	Family	Type	Severity
350177	Ubuntu 24.04 LTS / 26.04 LTS / Pro Realtime 24.04 LTS : Linux kernel vulnerabilities (USN-8816-1)	Nessus	Ubuntu Local Security Checks	Local	critical
348386	Ubuntu 24.04 LTS / Pro Realtime 24.04 LTS : Linux kernel (NVIDIA Tegra) vulnerabilities (USN-8781-1)	Nessus	Ubuntu Local Security Checks	Local	high
343049	Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-500248)	Nessus	Oracle Linux Local Security Checks	Local	high
343048	Oracle Linux 8 / 9 : Unbreakable Enterprise kernel (ELSA-2026-500249)	Nessus	Oracle Linux Local Security Checks	Local	high
335710	Linux Distros Unpatched Vulnerability : CVE-2026-72085	Nessus	Misc.	Local	critical
334784	Photon OS 5.0: Linux PHSA-2026-5.0-92-0952	Nessus	PhotonOS Local Security Checks	Local	high

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CVE-2026-72085

critical

Tenable Plugins

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