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CVE-2025-40328

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CVE-2025-40328

Published: Dec 9, 2025

Modified: May 11, 2026

PUBLISHED

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 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.

VendorProductVersions

Linux

Linux

affected
ebe98f1447bbccf8228335c62d86af02a0ed23f7 - < cb52d9c86d70298de0ab7c7953653898cbc0efd6
affected
ebe98f1447bbccf8228335c62d86af02a0ed23f7 - < 065bd62412271a2d734810dd50336cae88c54427
affected
ebe98f1447bbccf8228335c62d86af02a0ed23f7 - < bdb596ceb4b7c3f28786a33840263728217fbcf5
affected
ebe98f1447bbccf8228335c62d86af02a0ed23f7 - < 734e99623c5b65bf2c03e35978a0b980ebc3c2f8

Linux

Linux

affected
6.1
unaffected
0 - < 6.1
unaffected
6.6.117 - <= 6.6.*
unaffected
6.12.58 - <= 6.12.*
unaffected
6.17.8 - <= 6.17.*

+1 more versions

References

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