cbcvebase.
CVE-2023-54006
published 2025-12-24

CVE-2023-54006: In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix data-race around unix_tot_inflight. unix_tot_inflight is changed under…

PriorityP422low5.5
EPSS
0.19%
9.1th percentile
In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix data-race around unix_tot_inflight. unix_tot_inflight is changed under spin_lock(unix_gc_lock), but unix_release_sock() reads it locklessly. Let's use READ_ONCE() for unix_tot_inflight. Note that the writer side was marked by commit 9d6d7f1cb67c ("af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress") BUG: KCSAN: data-race in unix_inflight / unix_release_sock write (marked) to 0xffffffff871852b8 of 4 bytes by task 123 on cpu 1: unix_inflight+0x130/0x180 net/unix/scm.c:64 unix_attach_fds+0x137/0x1b0 net/unix/scm.c:123 unix_scm_to_skb net/unix/af_unix.c:1832 [inline] unix_dgram_sendmsg+0x46a/0x14f0 net/unix/af_unix.c:1955 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0x148/0x160 net/socket.c:747 ____sys_sendmsg+0x4e4/0x610 net/socket.c:2493 ___sys_sendmsg+0xc6/0x140 net/socket.c:2547 __sys_sendmsg+0x94/0x140 net/socket.c:2576 __do_sys_sendmsg net/socket.c:2585 [inline] __se_sys_sendmsg net/socket.c:2583 [inline] __x64_sys_sendmsg+0x45/0x50 net/socket.c:2583 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 read to 0xffffffff871852b8 of 4 bytes by task 4891 on cpu 0: unix_release_sock+0x608/0x910 net/unix/af_unix.c:671 unix_release+0x59/0x80 net/unix/af_unix.c:1058 __sock_release+0x7d/0x170 net/socket.c:653 sock_close+0x19/0x30 net/socket.c:1385 __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_hwfra

Affected

21 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.55-1 (bookworm)linux 6.1.55-1 (bookworm)
linuxlinux——
linuxlinux>= 9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8 < 31b46d5e7c4e295bd112960614a66a177a057dca31b46d5e7c4e295bd112960614a66a177a057dca
linuxlinux>= 9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8 < 20aa8325464d8905450089eed96ca102a074d85320aa8325464d8905450089eed96ca102a074d853
linuxlinux>= 9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8 < 5d91b7891f4a9a9d69d75e9f44ab4bf1f3b118405d91b7891f4a9a9d69d75e9f44ab4bf1f3b11840
linuxlinux>= 9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8 < cf29b42766ad4af2ae6a449f583796951551b48dcf29b42766ad4af2ae6a449f583796951551b48d
linuxlinux>= 9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8 < e5edc6e44a882c0458878ab10eaddfe60ac34e57e5edc6e44a882c0458878ab10eaddfe60ac34e57
linuxlinux>= 9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8 < 2d8933ca863e252fb09ad0be483255e3dfeb1f542d8933ca863e252fb09ad0be483255e3dfeb1f54
linuxlinux>= 9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8 < afc284a4a781defbb12b2a40427fae34c3d20e17afc284a4a781defbb12b2a40427fae34c3d20e17
linuxlinux>= 9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8 < ade32bd8a738d7497ffe9743c46728db26740f78ade32bd8a738d7497ffe9743c46728db26740f78
linuxlinux_kernel>= 0 < 5.10.197-15.10.197-1
linuxlinux_kernel>= 0 < 6.1.55-16.1.55-1
linuxlinux_kernel>= 0 < 6.5.6-16.5.6-1
linuxlinux_kernel>= 0 < 6.5.6-16.5.6-1
linuxlinux_kernel>= 2.6.24 < 4.14.3264.14.326
linuxlinux_kernel>= 4.15.0 < 4.19.2954.19.295
linuxlinux_kernel>= 4.20.0 < 5.4.2575.4.257
linuxlinux_kernel>= 5.11.0 < 5.15.1325.15.132
linuxlinux_kernel>= 5.16.0 < 6.1.546.1.54
linuxlinux_kernel>= 5.5.0 < 5.10.1955.10.195
linuxlinux_kernel>= 6.2.0 < 6.5.46.5.4
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