In the Linux kernel, the following vulnerability has been resolved:
cifs: Fix memory leak on the deferred close
xfstests on smb21 report kmemleak as below:
unreferenced object 0xffff8881767d6200 (size 64):
comm "xfs_io", pid 1284, jiffies 4294777434 (age 20.789s)
hex dump (first 32 bytes):
80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff .Z......x..c....
00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00 .q.v............
backtrace:
[<00000000ad04e6ea>] cifs_close+0x92/0x2c0
[<0000000028b93c82>] __fput+0xff/0x3f0
[<00000000d8116851>] task_work_run+0x85/0xc0
[<0000000027e14f9e>] do_exit+0x5e5/0x1240
[<00000000fb492b95>] do_group_exit+0x58/0xe0
[<00000000129a32d9>] __x64_sys_exit_group+0x28/0x30
[<00000000e3f7d8e9>] do_syscall_64+0x35/0x80
[<00000000102e8a0b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
When cancel the deferred close work, we should also cleanup the struct
cifs_deferred_close.
References
Configurations
Configuration 1 (hide)
|
History
17 Nov 2025, 19:27
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5 - Patch | |
| References | () https://git.kernel.org/stable/c/860efae127888ae535bc4eda1b7f27642727c69e - Patch | |
| References | () https://git.kernel.org/stable/c/ca08d0eac020d48a3141dbec0a3cf64fbdb17cde - Patch | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:5.14:rc7:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:* |
|
| CWE | CWE-401 |
Information
Published : 2025-06-18 11:15
Updated : 2025-11-17 19:27
NVD link : CVE-2022-50076
Mitre link : CVE-2022-50076
CVE.ORG link : CVE-2022-50076
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-401
Missing Release of Memory after Effective Lifetime