What’s Vulnerable › Vulnerabilities
CVE-2025-68226: smb: client: fix incomplete backport in cfids_invalidation_worker()
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-12-16 · updated 2026-10-15
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().
Affected products
- Linux kernel: from 6.17.8 before 6.17.10 — fixed in 6.17.10
How to fix
Upgrade to a fixed version: Linux kernel 6.17.10. Check the vendor advisory for mitigations.
References
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