cvedb.io
CVE-2025-40328
HIGH · CVSS 8.8
EPSS exploitation probability: 0%
Published 2025-12-09T16:17:42.903 · Last modified 2026-07-30T06:24:29.547

Summary

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.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.