USN-8261-1: Linux kernel (Xilinx) vulnerabilities

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo
Rizzo discovered that some AMD Zen processors did not properly verify the
signature of CPU microcode. This flaw is known as EntrySign. A privileged
attacker could possibly use this issue to cause load malicious CPU
microcode causing loss of integrity and confidentiality. (CVE-2024-36347)

Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853, CVE-2026-23268, CVE-2026-23269, CVE-2026-23403,
CVE-2026-23404, CVE-2026-23405, CVE-2026-23406, CVE-2026-23407,
CVE-2026-23408, CVE-2026-23409, CVE-2026-23410, CVE-2026-23411)

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;
- MIPS architecture;
- Nios II architecture;
- PA-RISC architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Xtensa architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- ATM drivers;
- Drivers core;
- Block device driver;
- Network block device driver;
- Bluetooth drivers;
- Bus devices;
- Character device driver;
- Hardware random number generator core;
- TPM device driver;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto device drivers;
- Device frequency scaling framework;
- DMA engine subsystem;
- ARM SCMI message protocol;
- EFI core;
- Intel Stratix 10 firmware drivers;
- GPU drivers;
- HID subsystem;
- Hardware monitoring drivers;
- CoreSight HW tracing drivers;
- IIO subsystem;
- InfiniBand drivers;
- Input Device core drivers;
- Input Device (Miscellaneous) drivers;
- Input Device (Tablet) drivers;
- IOMMU subsystem;
- IRQ chip drivers;
- ISDN/mISDN subsystem;
- Macintosh device drivers;
- Mailbox framework;
- Multiple devices driver;
- Media drivers;
- Fastrpc Driver;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Ethernet bonding driver;
- Network drivers;
- Mellanox network drivers;
- STMicroelectronics network drivers;
- Texas Instruments network drivers;
- Ethernet team driver;
- MediaTek network drivers;
- NVME drivers;
- PA-RISC drivers;
- PCI subsystem;
- PCCARD (PCMCIA/CardBus) bus subsystem;
- Performance monitor drivers;
- Pin controllers subsystem;
- Chrome hardware platform drivers;
- x86 platform drivers;
- ARM PM domains;
- PPS (Pulse Per Second) driver;
- PTP clock framework;
- PWM drivers;
- Voltage and Current Regulator drivers;
- Remote Processor subsystem;
- S/390 drivers;
- SCSI subsystem;
- Texas Instruments SoC drivers;
- SPI subsystem;
- Media Oriented Systems Transport (MOST) driver;
- Realtek RTL8723BS SDIO drivers;
- TCM subsystem;
- Trusted Execution Environment drivers;
- TTY drivers;
- Userspace I/O drivers;
- Cadence USB3 driver;
- DesignWare USB3 driver;
- USB Gadget drivers;
- USB Host Controller drivers;
- Renesas USBHS Controller drivers;
- USB Mass Storage drivers;
- USB Type-C Connector System Software Interface driver;
- Virtio Host (VHOST) subsystem;
- Backlight driver;
- Framebuffer layer;
- Watchdog drivers;
- Xen hypervisor drivers;
- AFS file system;
- BFS file system;
- BTRFS file system;
- Ceph distributed file system;
- File systems infrastructure;
- EFI Variable file system;
- exFAT file system;
- Ext4 file system;
- F2FS file system;
- FUSE (File system in Userspace);
- GFS2 file system;
- HFS file system;
- HFS+ file system;
- HugeTLB file system;
- Journaling layer for block devices (JBD2);
- JFS file system;
- KERNFS file system;
- Network file system (NFS) client;
- Network file system (NFS) server daemon;
- File system notification infrastructure;
- NTFS3 file system;
- OCFS2 file system;
- OrangeFS file system;
- Proc file system;
- Diskquota system;
- SMB network file system;
- SquashFS file system;
- UDF file system;
- XFS file system;
- Asynchronous Transfer Mode (ATM) subsystem;
- BPF subsystem;
- Ethernet bridge;
- Mellanox drivers;
- NFS page cache wrapper;
- Memory management;
- Memory Management;
- Media input infrastructure;
- Bluetooth subsystem;
- IP tunnels definitions;
- Network traffic control;
- Rose network layer;
- Network sockets;
- io_uring subsystem;
- Control group (cgroup);
- Kernel crash support code;
- Kernel futex primitives;
- Locking primitives;
- PID allocator;
- Scheduler infrastructure;
- Shadow Call Stack mechanism;
- Syscalls implementation;
- Timer subsystem;
- Tracing infrastructure;
- 9P file system network protocol;
- Amateur Radio drivers;
- B.A.T.M.A.N. meshing protocol;
- CAIF protocol;
- Ceph Core library;
- Networking core;
- Devlink API;
- Ethtool driver;
- Handshake API;
- HSR network protocol;
- IPv4 networking;
- IPv6 networking;
- MAC80211 subsystem;
- Multipath TCP;
- Netfilter;
- NET/ROM layer;
- NFC subsystem;
- Open vSwitch;
- RF switch subsystem;
- SCTP protocol;
- SMC sockets;
- Sun RPC protocol;
- TIPC protocol;
- TLS protocol;
- VMware vSockets driver;
- Wireless networking;
- eXpress Data Path;
- XFRM subsystem;
- Integrity Measurement Architecture(IMA) framework;
- Key management;
- Simplified Mandatory Access Control Kernel framework;
- FireWire sound drivers;
- HD-audio driver;
- Turtle Beach Wavefront ALSA driver;
- Intel ASoC drivers;
- QCOM ASoC drivers;
- STMicroelectronics SoC drivers;
- USB sound devices;
- KVM subsystem;
(CVE-2024-57795, CVE-2025-21833, CVE-2025-22022, CVE-2025-22103,
CVE-2025-22105, CVE-2025-22106, CVE-2025-22107, CVE-2025-22111,
CVE-2025-22113, CVE-2025-22121, CVE-2025-22124, CVE-2025-22125,
CVE-2025-23129, CVE-2025-23130, CVE-2025-23133, CVE-2025-23143,
CVE-2025-37860, CVE-2025-38022, CVE-2025-38105, CVE-2025-38234,
CVE-2025-38502, CVE-2025-38556, CVE-2025-38627, CVE-2025-38643,
CVE-2025-38709, CVE-2025-39678, CVE-2025-39697, CVE-2025-39805,
CVE-2025-39806, CVE-2025-39807, CVE-2025-39808, CVE-2025-39810,
CVE-2025-39811, CVE-2025-39812, CVE-2025-39813, CVE-2025-39815,
CVE-2025-39817, CVE-2025-39819, CVE-2025-39823, CVE-2025-39824,
CVE-2025-39825, CVE-2025-39826, CVE-2025-39827, CVE-2025-39828,
CVE-2025-39829, CVE-2025-39832, CVE-2025-39835, CVE-2025-39836,
CVE-2025-39838, CVE-2025-39839, CVE-2025-39841, CVE-2025-39842,
CVE-2025-39843, CVE-2025-39844, CVE-2025-39845, CVE-2025-39846,
CVE-2025-39847, CVE-2025-39848, CVE-2025-39849, CVE-2025-39850,
CVE-2025-39851, CVE-2025-39852, CVE-2025-39853, CVE-2025-39854,
CVE-2025-39857, CVE-2025-39860, CVE-2025-39861, CVE-2025-39863,
CVE-2025-39864, CVE-2025-39865, CVE-2025-39866, CVE-2025-39869,
CVE-2025-39870, CVE-2025-39871, CVE-2025-39873, CVE-2025-39876,
CVE-2025-39877, CVE-2025-39880, CVE-2025-39881, CVE-2025-39883,
CVE-2025-39885, CVE-2025-39886, CVE-2025-39891, CVE-2025-39894,
CVE-2025-39895, CVE-2025-39899, CVE-2025-39901, CVE-2025-39902,
CVE-2025-39907, CVE-2025-39909, CVE-2025-39911, CVE-2025-39913,
CVE-2025-39914, CVE-2025-39916, CVE-2025-39920, CVE-2025-39923,
CVE-2025-39927, CVE-2025-39929, CVE-2025-39931, CVE-2025-39932,
CVE-2025-39934, CVE-2025-39937, CVE-2025-39938, CVE-2025-39940,
CVE-2025-39942, CVE-2025-39943, CVE-2025-39944, CVE-2025-39945,
CVE-2025-39947, CVE-2025-39948, CVE-2025-39949, CVE-2025-39950,
CVE-2025-39951, CVE-2025-39952, CVE-2025-39953, CVE-2025-39955,
CVE-2025-39957, CVE-2025-39961, CVE-2025-39965, CVE-2025-39967,
CVE-2025-39968, CVE-2025-39969, CVE-2025-39970, CVE-2025-39971,
CVE-2025-39972, CVE-2025-39973, CVE-2025-39977, CVE-2025-39978,
CVE-2025-39980, CVE-2025-39981, CVE-2025-39982, CVE-2025-39985,
CVE-2025-39986, CVE-2025-39987, CVE-2025-39988, CVE-2025-39991,
CVE-2025-39992, CVE-2025-39994, CVE-2025-39995, CVE-2025-39996,
CVE-2025-39998, CVE-2025-40000, CVE-2025-40001, CVE-2025-40006,
CVE-2025-40008, CVE-2025-40009, CVE-2025-40010, CVE-2025-40011,
CVE-2025-40013, CVE-2025-40016, CVE-2025-40020, CVE-2025-40021,
CVE-2025-40024, CVE-2025-40026, CVE-2025-40027, CVE-2025-40029,
CVE-2025-40030, CVE-2025-40031, CVE-2025-40032, CVE-2025-40033,
CVE-2025-40035, CVE-2025-40036, CVE-2025-40037, CVE-2025-40038,
CVE-2025-40042, CVE-2025-40043, CVE-2025-40044, CVE-2025-40047,
CVE-2025-40048, CVE-2025-40049, CVE-2025-40051, CVE-2025-40052,
CVE-2025-40053, CVE-2025-40055, CVE-2025-40056, CVE-2025-40057,
CVE-2025-40058, CVE-2025-40059, CVE-2025-40060, CVE-2025-40061,
CVE-2025-40062, CVE-2025-40067, CVE-2025-40068, CVE-2025-40070,
CVE-2025-40071, CVE-2025-40077, CVE-2025-40078, CVE-2025-40079,
CVE-2025-40080, CVE-2025-40081, CVE-2025-40083, CVE-2025-40084,
CVE-2025-40085, CVE-2025-40087, CVE-2025-40088, CVE-2025-40092,
CVE-2025-40093, CVE-2025-40094, CVE-2025-40095, CVE-2025-40096,
CVE-2025-40099, CVE-2025-40100, CVE-2025-40101, CVE-2025-40103,
CVE-2025-40104, CVE-2025-40105, CVE-2025-40106, CVE-2025-40107,
CVE-2025-40109, CVE-2025-40110, CVE-2025-40111, CVE-2025-40112,
CVE-2025-40115, CVE-2025-40116, CVE-2025-40118, CVE-2025-40120,
CVE-2025-40121, CVE-2025-40123, CVE-2025-40124, CVE-2025-40125,
CVE-2025-40126, CVE-2025-40127, CVE-2025-40129, CVE-2025-40134,
CVE-2025-40137, CVE-2025-40140, CVE-2025-40141, CVE-2025-40153,
CVE-2025-40154, CVE-2025-40155, CVE-2025-40156, CVE-2025-40159,
CVE-2025-40160, CVE-2025-40164, CVE-2025-40165, CVE-2025-40166,
CVE-2025-40167, CVE-2025-40169, CVE-2025-40171, CVE-2025-40172,
CVE-2025-40173, CVE-2025-40176, CVE-2025-40178, CVE-2025-40179,
CVE-2025-40180, CVE-2025-40183, CVE-2025-40187, CVE-2025-40188,
CVE-2025-40192, CVE-2025-40193, CVE-2025-40194, CVE-2025-40196,
CVE-2025-40198, CVE-2025-40200, CVE-2025-40201, CVE-2025-40202,
CVE-2025-40204, CVE-2025-40205, CVE-2025-40206, CVE-2025-40207,
CVE-2025-40211, CVE-2025-40218, CVE-2025-40219, CVE-2025-40220,
CVE-2025-40221, CVE-2025-40223, CVE-2025-40226, CVE-2025-40231,
CVE-2025-40233, CVE-2025-40235, CVE-2025-40237, CVE-2025-40238,
CVE-2025-40240, CVE-2025-40242, CVE-2025-40243, CVE-2025-40244,
CVE-2025-40245, CVE-2025-40248, CVE-2025-40250, CVE-2025-40251,
CVE-2025-40252, CVE-2025-40253, CVE-2025-40254, CVE-2025-40257,
CVE-2025-40258, CVE-2025-40259, CVE-2025-40261, CVE-2025-40262,
CVE-2025-40263, CVE-2025-40264, CVE-2025-40266, CVE-2025-40268,
CVE-2025-40269, CVE-2025-40271, CVE-2025-40272, CVE-2025-40273,
CVE-2025-40275, CVE-2025-40277, CVE-2025-40278, CVE-2025-40279,
CVE-2025-40280, CVE-2025-40281, CVE-2025-40282, CVE-2025-40283,
CVE-2025-40284, CVE-2025-40285, CVE-2025-40286, CVE-2025-40287,
CVE-2025-40288, CVE-2025-40289, CVE-2025-40292, CVE-2025-40293,
CVE-2025-40294, CVE-2025-40301, CVE-2025-40303, CVE-2025-40304,
CVE-2025-40305, CVE-2025-40306, CVE-2025-40307, CVE-2025-40308,
CVE-2025-40309, CVE-2025-40310, CVE-2025-40311, CVE-2025-40312,
CVE-2025-40313, CVE-2025-40314, CVE-2025-40315, CVE-2025-40317,
CVE-2025-40318, CVE-2025-40319, CVE-2025-40320, CVE-2025-40321,
CVE-2025-40322, CVE-2025-40323, CVE-2025-40324, CVE-2025-40325,
CVE-2025-40328, CVE-2025-40329, CVE-2025-40331, CVE-2025-40333,
CVE-2025-40337, CVE-2025-40339, CVE-2025-40341, CVE-2025-40342,
CVE-2025-40343, CVE-2025-40345, CVE-2025-40346, CVE-2025-40347,
CVE-2025-40349, CVE-2025-40350, CVE-2025-40351, CVE-2025-40353,
CVE-2025-40358, CVE-2025-40360, CVE-2025-40363, CVE-2025-68168,
CVE-2025-68171, CVE-2025-68172, CVE-2025-68173, CVE-2025-68176,
CVE-2025-68177, CVE-2025-68178, CVE-2025-68179, CVE-2025-68180,
CVE-2025-68183, CVE-2025-68184, CVE-2025-68185, CVE-2025-68190,
CVE-2025-68191, CVE-2025-68192, CVE-2025-68194, CVE-2025-68198,
CVE-2025-68200, CVE-2025-68201, CVE-2025-68204, CVE-2025-68206,
CVE-2025-68208, CVE-2025-68213, CVE-2025-68214, CVE-2025-68217,
CVE-2025-68218, CVE-2025-68219, CVE-2025-68220, CVE-2025-68222,
CVE-2025-68223, CVE-2025-68227, CVE-2025-68229, CVE-2025-68231,
CVE-2025-68233, CVE-2025-68235, CVE-2025-68237, CVE-2025-68238,
CVE-2025-68241, CVE-2025-68244, CVE-2025-68245, CVE-2025-68246,
CVE-2025-68249, CVE-2025-68254, CVE-2025-68255, CVE-2025-68256,
CVE-2025-68257, CVE-2025-68258, CVE-2025-68259, CVE-2025-68261,
CVE-2025-68263, CVE-2025-68264, CVE-2025-68265, CVE-2025-68266,
CVE-2025-68282, CVE-2025-68283, CVE-2025-68284, CVE-2025-68285,
CVE-2025-68286, CVE-2025-68287, CVE-2025-68288, CVE-2025-68289,
CVE-2025-68290, CVE-2025-68295, CVE-2025-68297, CVE-2025-68301,
CVE-2025-68302, CVE-2025-68303, CVE-2025-68305, CVE-2025-68307,
CVE-2025-68308, CVE-2025-68310, CVE-2025-68311, CVE-2025-68312,
CVE-2025-68313, CVE-2025-68315, CVE-2025-68320, CVE-2025-68321,
CVE-2025-68322, CVE-2025-68325, CVE-2025-68327, CVE-2025-68328,
CVE-2025-68330, CVE-2025-68331, CVE-2025-68332, CVE-2025-68335,
CVE-2025-68336, CVE-2025-68337, CVE-2025-68339, CVE-2025-68340,
CVE-2025-68342, CVE-2025-68343, CVE-2025-68344, CVE-2025-68345,
CVE-2025-68346, CVE-2025-68347, CVE-2025-68349, CVE-2025-68354,
CVE-2025-68362, CVE-2025-68363, CVE-2025-68364, CVE-2025-68366,
CVE-2025-68367, CVE-2025-68371, CVE-2025-68372, CVE-2025-68374,
CVE-2025-68378, CVE-2025-68379, CVE-2025-68380, CVE-2025-68724,
CVE-2025-68727, CVE-2025-68728, CVE-2025-68732, CVE-2025-68733,
CVE-2025-68734, CVE-2025-68740, CVE-2025-68741, CVE-2025-68742,
CVE-2025-68744, CVE-2025-68746, CVE-2025-68753, CVE-2025-68755,
CVE-2025-68756, CVE-2025-68757, CVE-2025-68758, CVE-2025-68759,
CVE-2025-68763, CVE-2025-68764, CVE-2025-68765, CVE-2025-68766,
CVE-2025-68767, CVE-2025-68769, CVE-2025-68770, CVE-2025-68771,
CVE-2025-68772, CVE-2025-68773, CVE-2025-68774, CVE-2025-68775,
CVE-2025-68776, CVE-2025-68777, CVE-2025-68778, CVE-2025-68780,
CVE-2025-68782, CVE-2025-68783, CVE-2025-68785, CVE-2025-68786,
CVE-2025-68787, CVE-2025-68788, CVE-2025-68794, CVE-2025-68795,
CVE-2025-68796, CVE-2025-68797, CVE-2025-68798, CVE-2025-68799,
CVE-2025-68800, CVE-2025-68801, CVE-2025-68804, CVE-2025-68806,
CVE-2025-68808, CVE-2025-68809, CVE-2025-68810, CVE-2025-68811,
CVE-2025-68813, CVE-2025-68814, CVE-2025-68815, CVE-2025-68816,
CVE-2025-68817, CVE-2025-68818, CVE-2025-68819, CVE-2025-68820,
CVE-2025-71064, CVE-2025-71065, CVE-2025-71066, CVE-2025-71067,
CVE-2025-71068, CVE-2025-71069, CVE-2025-71071, CVE-2025-71072,
CVE-2025-71075, CVE-2025-71077, CVE-2025-71078, CVE-2025-71079,
CVE-2025-71081, CVE-2025-71082, CVE-2025-71083, CVE-2025-71084,
CVE-2025-71085, CVE-2025-71086, CVE-2025-71087, CVE-2025-71088,
CVE-2025-71089, CVE-2025-71091, CVE-2025-71093, CVE-2025-71094,
CVE-2025-71095, CVE-2025-71096, CVE-2025-71097, CVE-2025-71098,
CVE-2025-71101, CVE-2025-71102, CVE-2025-71104, CVE-2025-71105,
CVE-2025-71107, CVE-2025-71108, CVE-2025-71109, CVE-2025-71111,
CVE-2025-71112, CVE-2025-71113, CVE-2025-71114, CVE-2025-71116,
CVE-2025-71118, CVE-2025-71119, CVE-2025-71120, CVE-2025-71121,
CVE-2025-71122, CVE-2025-71125, CVE-2025-71126, CVE-2025-71127,
CVE-2025-71130, CVE-2025-71131, CVE-2025-71132, CVE-2025-71133,
CVE-2025-71135, CVE-2025-71136, CVE-2025-71137, CVE-2025-71138,
CVE-2025-71140, CVE-2025-71141, CVE-2025-71143, CVE-2025-71147,
CVE-2025-71148, CVE-2025-71150, CVE-2025-71151, CVE-2025-71153,
CVE-2025-71154, CVE-2026-23060, CVE-2026-23074, CVE-2026-23111,
CVE-2026-23112, CVE-2026-23209, CVE-2026-23231, CVE-2026-23273)