{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-54226","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-30T12:06:44.502Z","datePublished":"2025-12-30T12:11:19.522Z","dateUpdated":"2026-05-11T19:57:53.270Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:57:53.270Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Fix data races around sk->sk_shutdown.\n\nKCSAN found a data race around sk->sk_shutdown where unix_release_sock()\nand unix_shutdown() update it under unix_state_lock(), OTOH unix_poll()\nand unix_dgram_poll() read it locklessly.\n\nWe need to annotate the writes and reads with WRITE_ONCE() and READ_ONCE().\n\nBUG: KCSAN: data-race in unix_poll / unix_release_sock\n\nwrite to 0xffff88800d0f8aec of 1 bytes by task 264 on cpu 0:\n unix_release_sock+0x75c/0x910 net/unix/af_unix.c:631\n unix_release+0x59/0x80 net/unix/af_unix.c:1042\n __sock_release+0x7d/0x170 net/socket.c:653\n sock_close+0x19/0x30 net/socket.c:1397\n __fput+0x179/0x5e0 fs/file_table.c:321\n ____fput+0x15/0x20 fs/file_table.c:349\n task_work_run+0x116/0x1a0 kernel/task_work.c:179\n resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]\n exit_to_user_mode_loop kernel/entry/common.c:171 [inline]\n exit_to_user_mode_prepare+0x174/0x180 kernel/entry/common.c:204\n __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]\n syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:297\n do_syscall_64+0x4b/0x90 arch/x86/entry/common.c:86\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nread to 0xffff88800d0f8aec of 1 bytes by task 222 on cpu 1:\n unix_poll+0xa3/0x2a0 net/unix/af_unix.c:3170\n sock_poll+0xcf/0x2b0 net/socket.c:1385\n vfs_poll include/linux/poll.h:88 [inline]\n ep_item_poll.isra.0+0x78/0xc0 fs/eventpoll.c:855\n ep_send_events fs/eventpoll.c:1694 [inline]\n ep_poll fs/eventpoll.c:1823 [inline]\n do_epoll_wait+0x6c4/0xea0 fs/eventpoll.c:2258\n __do_sys_epoll_wait fs/eventpoll.c:2270 [inline]\n __se_sys_epoll_wait fs/eventpoll.c:2265 [inline]\n __x64_sys_epoll_wait+0xcc/0x190 fs/eventpoll.c:2265\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nvalue changed: 0x00 -> 0x03\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 222 Comm: dbus-broker Not tainted 6.3.0-rc7-02330-gca6270c12e20 #2\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/unix/af_unix.c"],"versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"1c488f4e95b498c977fbeae784983eb4cf6085e8","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"196528ad484443627779540697f4fb0ef0e01c52","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"8307e372e7445ec7d3cd2ff107ce5078eaa02815","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"a41559ae3681975f1ced815d8d4c983b6b938499","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"e410895892f99700ce54347d42c8dbe962eea9f4","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"f237f79b63c9242450e6869adcd2c10445859f28","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"e1d09c2c2f5793474556b60f83900e088d0d366d","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/unix/af_unix.c"],"versions":[{"version":"2.6.12","status":"affected"},{"version":"0","lessThan":"2.6.12","status":"unaffected","versionType":"semver"},{"version":"4.19.284","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.244","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.181","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.113","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.30","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.3.4","lessThanOrEqual":"6.3.*","status":"unaffected","versionType":"semver"},{"version":"6.4","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"4.19.284"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.4.244"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.10.181"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.15.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.1.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.3.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.4"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/1c488f4e95b498c977fbeae784983eb4cf6085e8"},{"url":"https://git.kernel.org/stable/c/196528ad484443627779540697f4fb0ef0e01c52"},{"url":"https://git.kernel.org/stable/c/8307e372e7445ec7d3cd2ff107ce5078eaa02815"},{"url":"https://git.kernel.org/stable/c/a41559ae3681975f1ced815d8d4c983b6b938499"},{"url":"https://git.kernel.org/stable/c/e410895892f99700ce54347d42c8dbe962eea9f4"},{"url":"https://git.kernel.org/stable/c/f237f79b63c9242450e6869adcd2c10445859f28"},{"url":"https://git.kernel.org/stable/c/e1d09c2c2f5793474556b60f83900e088d0d366d"}],"title":"af_unix: Fix data races around sk->sk_shutdown.","x_generator":{"engine":"bippy-1.2.0"}}}}