USN-8499-1: Linux kernel (Xilinx) vulnerabilities

It was discovered that the Linux kernel algif_aead module did not properly
handle in-place cryptographic operations. This flaw is known as Copy Fail.
A local attacker could use this to escalate privileges, or possibly escape
a container. (CVE-2026-31431)

It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000)

It was discovered that a logic flaw existed in the XFRM ESP-in-TCP
subsystem in the Linux kernel when handling socket buffer fragments. This
flaw is known as Fragnesia. A local attacker could use this to escalate
privileges, or possibly escape a container. (CVE-2026-43503,
CVE-2026-46300)

Qualys discovered that a race condition existed in the ptrace subsystem of
the Linux kernel when privileged processes are exiting. An unprivileged
local attacker could use this issue to expose sensitive information.
(CVE-2026-46333)

Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contain a memory leak when handling AppArmor notifications. A local
attacker could use this to cause resource exhaustion. (CVE-2026-47326)

Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contain a NULL pointer dereference when handling AppArmor notifications. A
local attacker could use this to cause a kernel oops. (CVE-2026-47327)

Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contained an invalid free when handling AppArmor notifications. A local
attacker could use this to corrupt kernel memory. (CVE-2026-47328)

Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contained insufficient validation of AppArmor notification responses. A
local attacker could use this to allow crafted responses to be processed.
(CVE-2026-47329)

Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 used
an uninitialized variable when handling AppArmor notifications. A local
attacker could use this to cause incorrect caching of data.
(CVE-2026-47330)

Tristan Madani discovered that Ubuntu Linux kernel 6.8 contained a use-
after-free (UAF) bug. A local attacker could use this to cause memory
corruption and, theoretically, arbitrary code execution. (CVE-2026-47331)

Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contained an out-of-bounds (OOB) read when handling AppArmor notifications.
A local attacker could use this to cause information disclosure of kernel
memory. (CVE-2026-47332)

Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contained a out-of-bounds (OOB) read when handling AppArmor notifications.
A local attacker could use this to cause kernel memory corruption and,
theoretically, influence processing of AppArmor policies. (CVE-2026-47333)

Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0
contained incorrect holding of locks when handling AppArmor notifications.
A local attacker could use this to cause a kernel panic or deadlock.
(CVE-2026-47334)

Tristan Madani discovered that Ubuntu Linux kernel 6.8 contained a NULL
pointer dereference when handling AppArmor notifications. A local attacker
could use this to cause a kernel panic. (CVE-2026-47335)

Tristan Madani discovered that Ubuntu Linux kernel 6.8 used an
uninitialized variable when handling AppArmor AF_INET/AF_INET6 socket
mediation. A local attacker could use this to influence processing of fine-
grained network socket mediation. (CVE-2026-47336)

Tristan Madani and Trevor Lawrence have each independently discovered that
Ubuntu Linux kernel 6.8, 6.17 and 7.0 contained a NULL pointer dereference
when handling AppArmor network socket mediation. A local attacker could use
this to cause a kernel oops. (CVE-2026-47337)

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:
- Foo-over-UDP (FOU);
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Intel NPU Driver;
- ACPI drivers;
- ATM drivers;
- Drivers core;
- Null block device driver;
- RNBD block device driver;
- Ublk userspace block driver;
- Bluetooth drivers;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- Counter interface drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware monitoring drivers;
- Intel Trace Hub HW tracing drivers;
- IIO subsystem;
- IIO ADC drivers;
- InfiniBand drivers;
- On-Chip Interconnect management framework;
- IOMMU subsystem;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- Multiple devices driver;
- Media drivers;
- Multifunction device drivers;
- Broadcom VK accelerator driver;
- UACCE accelerator framework;
- MMC subsystem;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Ethernet bonding driver;
- Network drivers;
- Mellanox network drivers;
- STMicroelectronics network drivers;
- NTB driver;
- NVME drivers;
- PCI subsystem;
- Performance monitor drivers;
- PHY drivers;
- Pin controllers subsystem;
- x86 platform drivers;
- i.MX PM domains;
- Power supply drivers;
- RapidIO drivers;
- RAS (Reliability, Availability, Serviceability) subsystem;
- Remote Processor subsystem;
- RPMSG subsystem;
- S/390 drivers;
- SCSI subsystem;
- SLIMbus drivers;
- MediaTek SoC drivers;
- Texas Instruments SoC drivers;
- SPI subsystem;
- Greybus lights staging drivers;
- Realtek RTL8723BS SDIO drivers;
- TCM subsystem;
- UFS subsystem;
- ChipIdea USB driver;
- DesignWare USB3 driver;
- USB over IP driver;
- vDPA drivers;
- Virtio Host (VHOST) subsystem;
- Framebuffer layer;
- W1 Dallas's 1-wire bus driver;
- Xen hypervisor drivers;
- BTRFS file system;
- File systems infrastructure;
- Ceph distributed file system;
- EFI Variable file system;
- exFAT file system;
- Ext4 file system;
- F2FS file system;
- FAT file system;
- GFS2 file system;
- HFS+ file system;
- JFS file system;
- Network file system (NFS) client;
- Network file system (NFS) server daemon;
- NILFS2 file system;
- NTFS3 file system;
- OCFS2 file system;
- Proc file system;
- Pstore file system;
- Diskquota system;
- SMB network file system;
- XFS file system;
- Audit subsystem;
- Memory Management;
- Scheduler infrastructure;
- IPv6 networking;
- Netfilter;
- NFC subsystem;
- Tracing infrastructure;
- io_uring subsystem;
- BPF subsystem;
- Perf events;
- Kernel kexec() syscall;
- RCU subsystem;
- Floating proportions library;
- Scatterlist API;
- Memory management;
- 9P file system network protocol;
- Asynchronous Transfer Mode (ATM) subsystem;
- B.A.T.M.A.N. meshing protocol;
- Bluetooth subsystem;
- Ethernet bridge;
- CAN network layer;
- Ceph Core library;
- Networking core;
- IPv4 networking;
- KCM (Kernel Connection Multiplexor) sockets driver;
- L2TP protocol;
- MAC80211 subsystem;
- Multipath TCP;
- NET/ROM layer;
- Packet sockets;
- RDS protocol;
- RxRPC session sockets;
- Network traffic control;
- SCTP protocol;
- SMC sockets;
- Sun RPC protocol;
- TLS protocol;
- Unix domain sockets;
- VMware vSockets driver;
- Wireless networking;
- X.25 network layer;
- XFRM subsystem;
- AppArmor security module;
- Simplified Mandatory Access Control Kernel framework;
- ALSA AC97 driver;
- Generic PCM loopback sound driver;
- Creative Sound Blaster X-Fi driver;
- AMD SoC Alsa drivers;
- Texas InstrumentS Audio (ASoC/HDA) drivers;
- SOF drivers;
- USB sound devices;
- KVM subsystem;
(CVE-2024-50004, CVE-2024-58096, CVE-2024-58097, CVE-2025-37926,
CVE-2025-38201, CVE-2025-38591, CVE-2025-40005, CVE-2025-40039,
CVE-2025-40082, CVE-2025-40149, CVE-2025-68351, CVE-2025-68358,
CVE-2025-68365, CVE-2025-68725, CVE-2025-68749, CVE-2025-68803,
CVE-2025-68823, CVE-2025-71160, CVE-2025-71162, CVE-2025-71163,
CVE-2025-71180, CVE-2025-71182, CVE-2025-71183, CVE-2025-71184,
CVE-2025-71185, CVE-2025-71186, CVE-2025-71188, CVE-2025-71189,
CVE-2025-71190, CVE-2025-71191, CVE-2025-71192, CVE-2025-71193,
CVE-2025-71194, CVE-2025-71195, CVE-2025-71196, CVE-2025-71197,
CVE-2025-71198, CVE-2025-71199, CVE-2025-71200, CVE-2025-71220,
CVE-2025-71222, CVE-2025-71224, CVE-2025-71225, CVE-2025-71229,
CVE-2025-71231, CVE-2025-71232, CVE-2025-71233, CVE-2025-71235,
CVE-2025-71236, CVE-2025-71237, CVE-2025-71238, CVE-2025-71239,
CVE-2025-71265, CVE-2025-71266, CVE-2025-71267, CVE-2025-71268,
CVE-2025-71272, CVE-2025-71273, CVE-2025-71274, CVE-2025-71286,
CVE-2025-71291, CVE-2025-71292, CVE-2025-71294, CVE-2025-71295,
CVE-2025-71297, CVE-2025-71304, CVE-2025-71305, CVE-2026-22976,
CVE-2026-22977, CVE-2026-22978, CVE-2026-22979, CVE-2026-22980,
CVE-2026-22982, CVE-2026-22984, CVE-2026-22990, CVE-2026-22991,
CVE-2026-22992, CVE-2026-22994, CVE-2026-22996, CVE-2026-22997,
CVE-2026-22998, CVE-2026-22999, CVE-2026-23000, CVE-2026-23001,
CVE-2026-23003, CVE-2026-23005, CVE-2026-23006, CVE-2026-23010,
CVE-2026-23011, CVE-2026-23019, CVE-2026-23020, CVE-2026-23021,
CVE-2026-23025, CVE-2026-23026, CVE-2026-23030, CVE-2026-23031,
CVE-2026-23032, CVE-2026-23033, CVE-2026-23035, CVE-2026-23037,
CVE-2026-23038, CVE-2026-23047, CVE-2026-23049, CVE-2026-23050,
CVE-2026-23053, CVE-2026-23054, CVE-2026-23056, CVE-2026-23057,
CVE-2026-23058, CVE-2026-23059, CVE-2026-23061, CVE-2026-23062,
CVE-2026-23063, CVE-2026-23064, CVE-2026-23065, CVE-2026-23068,
CVE-2026-23069, CVE-2026-23071, CVE-2026-23073, CVE-2026-23075,
CVE-2026-23076, CVE-2026-23078, CVE-2026-23080, CVE-2026-23083,
CVE-2026-23084, CVE-2026-23085, CVE-2026-23086, CVE-2026-23087,
CVE-2026-23088, CVE-2026-23089, CVE-2026-23090, CVE-2026-23091,
CVE-2026-23093, CVE-2026-23094, CVE-2026-23095, CVE-2026-23096,
CVE-2026-23097, CVE-2026-23098, CVE-2026-23099, CVE-2026-23100,
CVE-2026-23101, CVE-2026-23102, CVE-2026-23103, CVE-2026-23105,
CVE-2026-23107, CVE-2026-23108, CVE-2026-23110, CVE-2026-23113,
CVE-2026-23116, CVE-2026-23119, CVE-2026-23120, CVE-2026-23121,
CVE-2026-23123, CVE-2026-23124, CVE-2026-23125, CVE-2026-23126,
CVE-2026-23128, CVE-2026-23129, CVE-2026-23131, CVE-2026-23133,
CVE-2026-23135, CVE-2026-23136, CVE-2026-23139, CVE-2026-23140,
CVE-2026-23141, CVE-2026-23142, CVE-2026-23144, CVE-2026-23145,
CVE-2026-23146, CVE-2026-23148, CVE-2026-23150, CVE-2026-23151,
CVE-2026-23156, CVE-2026-23159, CVE-2026-23160, CVE-2026-23163,
CVE-2026-23164, CVE-2026-23166, CVE-2026-23167, CVE-2026-23168,
CVE-2026-23169, CVE-2026-23170, CVE-2026-23172, CVE-2026-23173,
CVE-2026-23176, CVE-2026-23178, CVE-2026-23179, CVE-2026-23180,
CVE-2026-23182, CVE-2026-23187, CVE-2026-23190, CVE-2026-23191,
CVE-2026-23193, CVE-2026-23198, CVE-2026-23200, CVE-2026-23202,
CVE-2026-23204, CVE-2026-23205, CVE-2026-23206, CVE-2026-23212,
CVE-2026-23213, CVE-2026-23214, CVE-2026-23215, CVE-2026-23216,
CVE-2026-23220, CVE-2026-23221, CVE-2026-23222, CVE-2026-23228,
CVE-2026-23229, CVE-2026-23230, CVE-2026-23233, CVE-2026-23234,
CVE-2026-23235, CVE-2026-23236, CVE-2026-23237, CVE-2026-23238,
CVE-2026-23241, CVE-2026-23242, CVE-2026-23243, CVE-2026-23249,
CVE-2026-23254, CVE-2026-23256, CVE-2026-23257, CVE-2026-23258,
CVE-2026-23260, CVE-2026-23261, CVE-2026-23262, CVE-2026-23264,
CVE-2026-23266, CVE-2026-23267, CVE-2026-23272, CVE-2026-23274,
CVE-2026-23278, CVE-2026-23351, CVE-2026-23392, CVE-2026-23394,
CVE-2026-23428, CVE-2026-23450, CVE-2026-23455, CVE-2026-31402,
CVE-2026-31411, CVE-2026-31418, CVE-2026-31419, CVE-2026-31436,
CVE-2026-31448, CVE-2026-31478, CVE-2026-31504, CVE-2026-31533,
CVE-2026-31607, CVE-2026-31637, CVE-2026-31649, CVE-2026-31657,
CVE-2026-31659, CVE-2026-31668, CVE-2026-31669, CVE-2026-31676,
CVE-2026-31682, CVE-2026-31685, CVE-2026-31687, CVE-2026-31693,
CVE-2026-43011, CVE-2026-43033, CVE-2026-43037, CVE-2026-43038,
CVE-2026-43071, CVE-2026-43077, CVE-2026-43078, CVE-2026-43114,
CVE-2026-43117, CVE-2026-43123, CVE-2026-43124, CVE-2026-43128,
CVE-2026-43130, CVE-2026-43132, CVE-2026-43133, CVE-2026-43134,
CVE-2026-43135, CVE-2026-43136, CVE-2026-43137, CVE-2026-43139,
CVE-2026-43140, CVE-2026-43141, CVE-2026-43143, CVE-2026-43145,
CVE-2026-43147, CVE-2026-43148, CVE-2026-43149, CVE-2026-43150,
CVE-2026-43152, CVE-2026-43153, CVE-2026-43156, CVE-2026-43157,
CVE-2026-43158, CVE-2026-43159, CVE-2026-43163, CVE-2026-43167,
CVE-2026-43168, CVE-2026-43169, CVE-2026-43170, CVE-2026-43171,
CVE-2026-43173, CVE-2026-43175, CVE-2026-43180, CVE-2026-43182,
CVE-2026-43183, CVE-2026-43184, CVE-2026-43186, CVE-2026-43187,
CVE-2026-43189, CVE-2026-43190, CVE-2026-43194, CVE-2026-43196,
CVE-2026-43199, CVE-2026-43200, CVE-2026-43201, CVE-2026-43202,
CVE-2026-43203, CVE-2026-43205, CVE-2026-43206, CVE-2026-43207,
CVE-2026-43209, CVE-2026-43211, CVE-2026-43212, CVE-2026-43214,
CVE-2026-43215, CVE-2026-43218, CVE-2026-43221, CVE-2026-43222,
CVE-2026-43223, CVE-2026-43225, CVE-2026-43226, CVE-2026-43227,
CVE-2026-43230, CVE-2026-43231, CVE-2026-43232, CVE-2026-43233,
CVE-2026-43236, CVE-2026-43238, CVE-2026-43239, CVE-2026-43241,
CVE-2026-43242, CVE-2026-43244, CVE-2026-43246, CVE-2026-43248,
CVE-2026-43249, CVE-2026-43250, CVE-2026-43251, CVE-2026-43253,
CVE-2026-43255, CVE-2026-43256, CVE-2026-43257, CVE-2026-43258,
CVE-2026-43261, CVE-2026-43262, CVE-2026-43264, CVE-2026-43266,
CVE-2026-43268, CVE-2026-43269, CVE-2026-43270, CVE-2026-43271,
CVE-2026-43273, CVE-2026-43275, CVE-2026-43277, CVE-2026-43278,
CVE-2026-43279, CVE-2026-43283, CVE-2026-43287, CVE-2026-43288,
CVE-2026-43289, CVE-2026-43291, CVE-2026-43295, CVE-2026-43296,
CVE-2026-43297, CVE-2026-43300, CVE-2026-43302, CVE-2026-43304,
CVE-2026-43312, CVE-2026-43313, CVE-2026-43314, CVE-2026-43315,
CVE-2026-43316, CVE-2026-43317, CVE-2026-43318, CVE-2026-43319,
CVE-2026-43320, CVE-2026-43341, CVE-2026-43378, CVE-2026-43383,
CVE-2026-43384, CVE-2026-43406, CVE-2026-43407, CVE-2026-43414,
CVE-2026-43493, CVE-2026-43494, CVE-2026-43501, CVE-2026-45847,
CVE-2026-45848, CVE-2026-45849, CVE-2026-45851, CVE-2026-45852,
CVE-2026-45856, CVE-2026-45857, CVE-2026-45859, CVE-2026-45860,
CVE-2026-45861, CVE-2026-45862, CVE-2026-45864, CVE-2026-45865,
CVE-2026-45866, CVE-2026-45867, CVE-2026-45868, CVE-2026-45869,
CVE-2026-45870, CVE-2026-45871, CVE-2026-45872, CVE-2026-45873,
CVE-2026-45875, CVE-2026-45877, CVE-2026-45878, CVE-2026-45879,
CVE-2026-45880, CVE-2026-45881, CVE-2026-45882, CVE-2026-45883,
CVE-2026-45884, CVE-2026-45885, CVE-2026-45886, CVE-2026-45890,
CVE-2026-45891, CVE-2026-45893, CVE-2026-45895, CVE-2026-45902,
CVE-2026-45904, CVE-2026-45905, CVE-2026-45910, CVE-2026-45912,
CVE-2026-45913, CVE-2026-45914, CVE-2026-45915, CVE-2026-45916,
CVE-2026-45917, CVE-2026-45919, CVE-2026-45921, CVE-2026-45923,
CVE-2026-45928, CVE-2026-45935, CVE-2026-45936, CVE-2026-45938,
CVE-2026-45941, CVE-2026-45946, CVE-2026-45947, CVE-2026-45948,
CVE-2026-45954, CVE-2026-45957, CVE-2026-45960, CVE-2026-45962,
CVE-2026-45964, CVE-2026-45965, CVE-2026-45968, CVE-2026-45969,
CVE-2026-45970, CVE-2026-45973, CVE-2026-45974, CVE-2026-45976,
CVE-2026-45978, CVE-2026-45981, CVE-2026-45982, CVE-2026-45983,
CVE-2026-45984, CVE-2026-45988, CVE-2026-46028, CVE-2026-46043,
CVE-2026-46115, CVE-2026-46119, CVE-2026-46135, CVE-2026-46185,
CVE-2026-46195, CVE-2026-46243, CVE-2026-46244, CVE-2026-46246,
CVE-2026-46247, CVE-2026-46249, CVE-2026-46250, CVE-2026-46251,
CVE-2026-46253, CVE-2026-46254, CVE-2026-46255, CVE-2026-46259,
CVE-2026-46261, CVE-2026-46265, CVE-2026-46266, CVE-2026-46267,
CVE-2026-46270, CVE-2026-46289, CVE-2026-46323, CVE-2026-46328)