VDB
DEBIAN-CVE-2025-40328
DEBIAN-CVE-2025-40328
PUBLISHED
CVSS 9.300000190734863 CRITICAL
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 acquired in smb2_close_cached_fid(), leading to use-after-free. Switch to kref_put_lock() so cfid_release() is called with cfid_list_lock held, closing that gap.
Risk Scores
CVSS 4.0
9.300000190734863
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | linux | 0, 6.12.63-1, 6.12.57-1 |
| Debian:12 | linux | 6.4.4-1, 6.17.9-1, 6.18.1-1 |
| Debian:14 | linux | 6.13~rc7-1~exp1, 6.14.3-1~exp1, 6.14.5-1~exp1 |
Exploit Intelligence
- 4081.3.7.yml (github-poc)
Timeline
- Dec 9, 2025 CVE Published
- Apr 28, 2026 CVE Updated