CVE-2025-40328

Description

In the Linux kernel, the following vulnerability has been resolved:smb: client: fix potential UAF in smb2_close_cached_fid()find_or_create_cached_dir() could grab a new reference after kref_put()had seen the refcount drop to zero but before cfid_list_lock is acquiredin smb2_close_cached_fid(), leading to use-after-free.Switch to kref_put_lock() so cfid_release() is called withcfid_list_lock held, closing that gap.

Risk Information

Base Score

7.0

MODERATE

Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U

EPSS Score

Exploitation Probability

0.026

Associated Vulnerability

No records found

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234