cbcvebase.
CVE-2023-53427
published 2025-09-18

CVE-2023-53427: In the Linux kernel, the following vulnerability has been resolved: cifs: Fix warning and UAF when destroy the MR list If the MR allocate failed, the MR…

PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.14%
3.9th percentile
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix warning and UAF when destroy the MR list If the MR allocate failed, the MR recovery work not initialized and list not cleared. Then will be warning and UAF when release the MR: WARNING: CPU: 4 PID: 824 at kernel/workqueue.c:3066 __flush_work.isra.0+0xf7/0x110 CPU: 4 PID: 824 Comm: mount.cifs Not tainted 6.1.0-rc5+ #82 RIP: 0010:__flush_work.isra.0+0xf7/0x110 Call Trace: __cancel_work_timer+0x2ba/0x2e0 smbd_destroy+0x4e1/0x990 _smbd_get_connection+0x1cbd/0x2110 smbd_get_connection+0x21/0x40 cifs_get_tcp_session+0x8ef/0xda0 mount_get_conns+0x60/0x750 cifs_mount+0x103/0xd00 cifs_smb3_do_mount+0x1dd/0xcb0 smb3_get_tree+0x1d5/0x300 vfs_get_tree+0x41/0xf0 path_mount+0x9b3/0xdd0 __x64_sys_mount+0x190/0x1d0 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 BUG: KASAN: use-after-free in smbd_destroy+0x4fc/0x990 Read of size 8 at addr ffff88810b156a08 by task mount.cifs/824 CPU: 4 PID: 824 Comm: mount.cifs Tainted: G W 6.1.0-rc5+ #82 Call Trace: dump_stack_lvl+0x34/0x44 print_report+0x171/0x472 kasan_report+0xad/0x130 smbd_destroy+0x4fc/0x990 _smbd_get_connection+0x1cbd/0x2110 smbd_get_connection+0x21/0x40 cifs_get_tcp_session+0x8ef/0xda0 mount_get_conns+0x60/0x750 cifs_mount+0x103/0xd00 cifs_smb3_do_mount+0x1dd/0xcb0 smb3_get_tree+0x1d5/0x300 vfs_get_tree+0x41/0xf0 path_mount+0x9b3/0xdd0 __x64_sys_mount+0x190/0x1d0 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 Allocated by task 824: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 __kasan_kmalloc+0x7a/0x90 _smbd_get_connection+0x1b6f/0x2110 smbd_get_connection+0x21/0x40 cifs_get_tcp_session+0x8ef/0xda0 mount_get_conns+0x60/0x750 cifs_mount+0x103/0xd00 cifs_smb3_do_mount+0x1dd/0xcb0 smb3_get_tree+0x1d5/0x300 vfs_get_tree+0x41/0xf0 path_mount+0x9b3/0xdd0 __x64_sys_mount+0x190/0x1d0 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 Freed by task 824: kasan_save_stack+0x1e/0x40 kasan_set_track

Affected

19 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.20-1 (bookworm)linux 6.1.20-1 (bookworm)
linuxlinux——
linuxlinux>= c7398583340a6d82b8bb7f7f21edcde27dc6a898 < 275a3d2b9408fc4895e342f772cab9a89960546e275a3d2b9408fc4895e342f772cab9a89960546e
linuxlinux>= c7398583340a6d82b8bb7f7f21edcde27dc6a898 < 3524d6da0fe88aee79f06be6572955d16ad76b393524d6da0fe88aee79f06be6572955d16ad76b39
linuxlinux>= c7398583340a6d82b8bb7f7f21edcde27dc6a898 < cfd85a0922c4696d768965e686ad805a58d9d834cfd85a0922c4696d768965e686ad805a58d9d834
linuxlinux>= c7398583340a6d82b8bb7f7f21edcde27dc6a898 < 7cbd5bdb5bd4404a5da4309521134b42c65846c07cbd5bdb5bd4404a5da4309521134b42c65846c0
linuxlinux>= c7398583340a6d82b8bb7f7f21edcde27dc6a898 < 41832c62a75dad530dc5a2856c92ae5459d497e541832c62a75dad530dc5a2856c92ae5459d497e5
linuxlinux>= c7398583340a6d82b8bb7f7f21edcde27dc6a898 < 2d0c4f5f618f58eba03385363717703bee873c642d0c4f5f618f58eba03385363717703bee873c64
linuxlinux>= c7398583340a6d82b8bb7f7f21edcde27dc6a898 < 3e161c2791f8e661eed24a2c624087084d9102153e161c2791f8e661eed24a2c624087084d910215
linuxlinux_kernel>= 0 < 5.10.178-15.10.178-1
linuxlinux_kernel>= 0 < 6.1.20-16.1.20-1
linuxlinux_kernel>= 0 < 6.1.20-16.1.20-1
linuxlinux_kernel>= 0 < 6.1.20-16.1.20-1
linuxlinux_kernel>= 4.16 < 4.19.2764.19.276
linuxlinux_kernel>= 4.20 < 5.4.2355.4.235
linuxlinux_kernel>= 5.11 < 5.15.995.15.99
linuxlinux_kernel>= 5.16 < 6.1.166.1.16
linuxlinux_kernel>= 5.5 < 5.10.1735.10.173
linuxlinux_kernel>= 6.2 < 6.2.36.2.3

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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