Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked() Commit 96c4af418586 ("cifs: Fix locking usage for tcon fields") refactored cifs code to change cifs_tcp_ses_lock for tc_lock around tc_count changes. There was missing lock around tc_count increment inside smb2_find_smb_sess_tcon_unlocked().
Affected products
linux: linux kernel
References6
- git.kernel.org/stable/c/13fb413ae22a37c69341918a6d651d19a9b0b9b7 Patch
- git.kernel.org/stable/c/4d8690dace005a38e6dbde9ecce2da3ad85c7c41 Patch
- git.kernel.org/stable/c/7df1df6f40c0720d30206aa35c0343b962350e0d Patch
- git.kernel.org/stable/c/bf4ebdb19ff9b3cdf992b50715fe61633327416a Patch
- git.kernel.org/stable/c/e374f4e496fef8168784f93a4477d67be34485fd Patch
- git.kernel.org/stable/c/7585d4242f59185b084957fa077396e53dbf7c24
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 36 · as of 14 November 2026
- CWE
- CWE-362
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