CVE-2023-54226

Not scored yetLast modified Oct 28, 2026

Description

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

af_unix: Fix data races around sk->sk_shutdown.

KCSAN found a data race around sk->sk_shutdown where unix_release_sock() and unix_shutdown() update it under unix_state_lock(), OTOH unix_poll() and unix_dgram_poll() read it locklessly.

We need to annotate the writes and reads with WRITE_ONCE() and READ_ONCE().

BUG: KCSAN: data-race in unix_poll / unix_release_sock

write to 0xffff88800d0f8aec of 1 bytes by task 264 on cpu 0: unix_release_sock+0x75c/0x910 net/unix/af_unix.c:631 unix_release+0x59/0x80 net/unix/af_unix.c:1042 __sock_release+0x7d/0x170 net/socket.c:653 sock_close+0x19/0x30 net/socket.c:1397 __fput+0x179/0x5e0 fs/file_table.c:321 ____fput+0x15/0x20 fs/file_table.c:349 task_work_run+0x116/0x1a0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x174/0x180 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:297 do_syscall_64+0x4b/0x90 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x72/0xdc

read to 0xffff88800d0f8aec of 1 bytes by task 222 on cpu 1: unix_poll+0xa3/0x2a0 net/unix/af_unix.c:3170 sock_poll+0xcf/0x2b0 net/socket.c:1385 vfs_poll include/linux/poll.h:88 [inline] ep_item_poll.isra.0+0x78/0xc0 fs/eventpoll.c:855 ep_send_events fs/eventpoll.c:1694 [inline] ep_poll fs/eventpoll.c:1823 [inline] do_epoll_wait+0x6c4/0xea0 fs/eventpoll.c:2258 __do_sys_epoll_wait fs/eventpoll.c:2270 [inline] __se_sys_epoll_wait fs/eventpoll.c:2265 [inline] __x64_sys_epoll_wait+0xcc/0x190 fs/eventpoll.c:2265 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x72/0xdc

value changed: 0x00 -> 0x03

Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 222 Comm: dbus-broker Not tainted 6.3.0-rc7-02330-gca6270c12e20 #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014

Metrics

No CVSS score has been published yet.

Affected software

VendorProductVersions
LinuxLinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 1c488f4e95b498c977fbeae784983eb4cf6085e8; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 196528ad484443627779540697f4fb0ef0e01c52; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 8307e372e7445ec7d3cd2ff107ce5078eaa02815; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a41559ae3681975f1ced815d8d4c983b6b938499; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e410895892f99700ce54347d42c8dbe962eea9f4; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f237f79b63c9242450e6869adcd2c10445859f28; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e1d09c2c2f5793474556b60f83900e088d0d366d
LinuxLinux2.6.12

References

Timeline

Published
Dec 30, 2025
Last modified
Oct 28, 2026
NVD status
Deferred

Related CVEs from 2023

CVE-2023-542277.5In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix tags leak when shrink nr_hw_queues Although we don't need CVE-2023-54228In the Linux kernel, the following vulnerability has been resolved: regulator: raa215300: Fix resource leak in case of error The clk_regisCVE-2023-54229In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix registration of 6Ghz-only phy without the full channeCVE-2023-54239.8A vulnerability has been found in SourceCodester Online Pizza Ordering System 1.0 and classified as critical. This vulnerability affects unkCVE-2023-54230In the Linux kernel, the following vulnerability has been resolved: amba: bus: fix refcount leak commit 5de1540b7bc4 ("drivers/amba: creatCVE-2023-54231In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix memory leak in wx_setup_rx_resources When wx_alloc_pagCVE-2023-54232In the Linux kernel, the following vulnerability has been resolved: m68k: Only force 030 bus error if PC not in exception table __get_kernCVE-2023-54233In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: avoid a NULL dereference with unsupported widgets If an IPCCVE-2023-542347.8In the Linux kernel, the following vulnerability has been resolved: scsi: mpi3mr: Fix missing mrioc->evtack_cmds initialization Commit c1aCVE-2023-54235In the Linux kernel, the following vulnerability has been resolved: PCI/DOE: Fix destroy_work_on_stack() race The following debug object sCVE-2023-54236In the Linux kernel, the following vulnerability has been resolved: net/net_failover: fix txq exceeding warning The failover txq is initedCVE-2023-542379.8In the Linux kernel, the following vulnerability has been resolved: net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()
CVE-2023-54226: Unscored | Vulnix