Riskcovery

CVE-2022-50076

cifs: Fix memory leak on the deferred close

State
Published
Severity
Not scored
Published
Jun 18, 2025
Updated
May 23, 2026
Reserved
Jun 18, 2025

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 9e992755be8f2d458a0bcbefd19e493483c1dba2 to before 860efae127888ae535bc4eda1b7f27642727c69eAffected
  • 9e992755be8f2d458a0bcbefd19e493483c1dba2 to before 60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5Affected
  • 9e992755be8f2d458a0bcbefd19e493483c1dba2 to before ca08d0eac020d48a3141dbec0a3cf64fbdb17cdeAffected
  • 0ca6ac8a2691762307beaa4841255d1cfe6b2684Affected
  • 5.13.12 to before 5.14Affected
LinuxLinux
  • 5.14Affected
  • before 5.14Not affected
  • 5.15.63 through 5.15.*Not affected
  • 5.19.4 through 5.19.*Not affected
  • 6.0 and laterNot affected

References

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