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ALSA-2026:1690 — Important: kernel security update

Affected: AlmaLinux:10: kernel-abi-stablelists, AlmaLinux:10: kernel-doc

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: Linux kernel: irqchip/gic-v2m use-after-free vulnerability (CVE-2025-37819) * kernel: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem (CVE-2025-38022) * kernel: Linux kernel use-after-free in eventpoll (CVE-2025-38349) * kernel: io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU (CVE-2025-38453) * kernel: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing (CVE-2025-38568) * kernel: drm/xe: Fix vm_bind_ioctl double free bug (CVE-2025-38731) * kernel: ASoC: Intel: bytcr_rt5640: Fix invalid quirk input mapping (CVE-2025-40154) * kernel: net: use dst_dev_rcu() in sk_setup_caps() (CVE-2025-40170) * kernel: ipv6: use RCU in ip6_xmit() (CVE-2025-40135) * kernel: ipv6: use RCU in ip6_output() (CVE-2025-40158) * kernel: Linux kernel: vsock vulnerability may lead to memory corruption (CVE-2025-40248) * kernel: mptcp: fix race condition in mptcp_schedule_work() (CVE-2025-40258) * kernel: devlink: rate: Unset parent pointer in devl_rate_nodes_destroy (CVE-2025-40251) * kernel: Linux kernel: Use-after-free in proc_readdir_de() can lead to privilege escalation or denial of service. (CVE-2025-40271) * kernel: Linux kernel: Out-of-bounds write in Bluetooth MGMT can lead to information disclosure and denial of service (CVE-2025-40294) * kernel: Linux kernel: Information disclosure a…

bdu:2025-11508

BELL-CVE-2025-38453

Affected: Alpaquita:25: linux-lts, Alpaquita:stream: linux-lts

certfr-2025-avi-0723 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un at…

certfr-2025-avi-0723

EUVD-2026-347049

fkie_cve-2025-38453

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

io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU

syzbot reports that defer/local task_work adding via msg_ring can hit a request that has been freed:

CPU: 1 UID: 0 PID: 19356 Comm: iou-wrk-19354 Not tainted 6.16.0-rc4-syzkaller-00108-g17bbde2e1716 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: <TASK> dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xd2/0x2b0 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 io_req_local_work_add io_uring/io_uring.c:1184 [inline] __io_req_task_work_add+0x589/0x950 io_uring/io_uring.c:1252 io_msg_remote_post io_uring/msg_ring.c:103 [inline] io_msg_data_remote io_uring/msg_ring.c:133 [inline] __io_msg_ring_data+0x820/0xaa0 io_uring/msg_ring.c:151 io_msg_ring_data io_uring/msg_ring.c:173 [inline] io_msg_ring+0x134/0xa00 io_uring/msg_ring.c:314 __io_issue_sqe+0x17e/0x4b0 io_uring/io_uring.c:1739 io_issue_sqe+0x165/0xfd0 io_uring/io_uring.c:1762 io_wq_submit_work+0x6e9/0xb90 io_uring/io_uring.c:1874 io_worker_handle_work+0x7cd/0x1180 io_uring/io-wq.c:642 io_wq_worker+0x42f/0xeb0 io_uring/io-wq.c:696 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK>

which is supposed to be safe with how requests are allocated. But m…

GHSA-9gq9-xvp8-xm4m

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

io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU

syzbot reports that defer/local task_work adding via msg_ring can hit a request that has been freed:

which is supposed to be safe with how requests are allocated. But m…

openSUSE-SU-2025:20081-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

RHSA-2026:1727 — Red Hat Security Advisory: kernel security update

kernel: Linux kernel: Information disclosure and denial of service in ntb_hw_switchtec module kernel: Linux kernel erofs: Use-After-Free due to device type mismatch kernel: io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU kernel: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing kernel: smb: client: let recv_done verify data_offset, data_length and remaining_data_length kernel: io_uring/waitid: always prune wait queue entry in io_waitid_wait() kernel: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable() kernel: sctp: avoid NULL dereference when chunk data buffer is missing kernel: Linux kernel: vsock vulnerability may lead to memory corruption kernel: devlink: rate: Unset parent pointer in devl_rate_nodes_destroy kernel: mptcp: fix race condition in mptcp_schedule_work() kernel: Linux kernel: Information disclosure and denial of service in Bluetooth HCI event handling kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. kernel: Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling kernel: net: atlantic: fix fragment overflow handling in RX path

SUSE-SU-2025:02853-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2025-38453

Affected: Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:18.04:LTS: linux-aws-5.0, Ubuntu:18.04:LTS: linux-aws-5.3, Ubuntu:18.04:LTS: linux-azure, Ubuntu:18.04:LTS: linux-azure-5.3, Ubuntu:18.04:LTS: linux-azure-edge, Ubuntu:18.04:LTS: linux-gcp, Ubuntu:18.04:LTS: linux-gcp-5.3, Ubuntu:18.04:LTS: linux-gke-4.15, Ubuntu:18.04:LTS: linux-gke-5.4 and 87 more

In the Linux kernel, the following vulnerability has been resolved: io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU syzbot reports that defer/local task_work adding via msg_ring can hit a request that has been freed: CPU: 1 UID: 0 PID: 19356 Comm: iou-wrk-19354 Not tainted 6.16.0-rc4-syzkaller-00108-g17bbde2e1716 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: <TASK> dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xd2/0x2b0 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 io_req_local_work_add io_uring/io_uring.c:1184 [inline] __io_req_task_work_add+0x589/0x950 io_uring/io_uring.c:1252 io_msg_remote_post io_uring/msg_ring.c:103 [inline] io_msg_data_remote io_uring/msg_ring.c:133 [inline] __io_msg_ring_data+0x820/0xaa0 io_uring/msg_ring.c:151 io_msg_ring_data io_uring/msg_ring.c:173 [inline] io_msg_ring+0x134/0xa00 io_uring/msg_ring.c:314 __io_issue_sqe+0x17e/0x4b0 io_uring/io_uring.c:1739 io_issue_sqe+0x165/0xfd0 io_uring/io_uring.c:1762 io_wq_submit_work+0x6e9/0xb90 io_uring/io_uring.c:1874 io_worker_handle_work+0x7cd/0x1180 io_uring/io-wq.c:642 io_wq_worker+0x42f/0xeb0 io_uring/io-wq.c:696 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> which is supposed to be safe with how requests are allocated. But msg r…

WID-SEC-W-2025-1653 — Linux Kernel: Mehrere Schwachstellen

Ein entfernter anonymer Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen oder andere nicht spezifizierte Angriffe durchzuführen.