CVE-2025-68226

smb: client: fix incomplete backport in cfids_invalidation_worker()

State: Published
Severity: 8.8 High
Published: Dec 16, 2025
Updated: Oct 15, 2026
Reserved: Dec 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

smb: client: fix incomplete backport in cfids_invalidation_worker()

The previous commit bdb596ceb4b7 ("smb: client: fix potential UAF in smb2_close_cached_fid()") was an incomplete backport and missed one kref_put() call in cfids_invalidation_worker() that should have been converted to close_cached_dir().

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	bdb596ceb4b7c3f28786a33840263728217fbcf5 to before abd29b6e17a918fdd68352ce4813e167acc8727eAffected
LinuxLinux	6.17.8 to before 6.17.10Affected

References

https://git.kernel.org/stable/c/abd29b6e17a918fdd68352ce4813e167acc8727e

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