In the Linux kernel, the following vulnerability has been resolved: cifs: Fix locking usage for tcon fields We used to use the cifs_tcp_ses_lock to protect a lot of objects that are not just the server, ses or tcon lists. We later introduced srv_lock, ses_lock and tc_lock to protect fields within the corresponding structs. This was done to provide a more granular protection and avoid unnecessary serialization. There were still a couple of uses of cifs_tcp_ses_lock to provide tcon fields. In this patch, I've replaced them with tc_lock.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- https://git.kernel.org/stable/c/3969db6b22e3d90d8c5f22ac1a7fe0350a94c136 Patch
- https://git.kernel.org/stable/c/601dd3b79769b38d30b693c40afdb2a4b7edf9d0 Patch
- https://git.kernel.org/stable/c/8c59eeeeffa1524ef57e173a89a1a3ff539888d5 Patch
- https://git.kernel.org/stable/c/953953abb66e52c224057ab91e404284fefeab62 Patch
- https://git.kernel.org/stable/c/96c4af418586ee9a6aab61738644366426e05316 Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 3
- CwesCWE-667 → CWE-667, CWE-362NVD modified 2026-10-19 20:18
- StatusAnalyzed → ModifiedNVD modified 2026-10-19 20:18
- First seenCVSS 8.8 · linuxNVD modified 2026-10-16 16:17
Affected (CPE criteria) 1
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References 5
- https://git.kernel.org/stable/c/3969db6b22e3d90d8c5f22ac1a7fe0350a94c136 Patch
- https://git.kernel.org/stable/c/601dd3b79769b38d30b693c40afdb2a4b7edf9d0 Patch
- https://git.kernel.org/stable/c/8c59eeeeffa1524ef57e173a89a1a3ff539888d5 Patch
- https://git.kernel.org/stable/c/953953abb66e52c224057ab91e404284fefeab62 Patch
- https://git.kernel.org/stable/c/96c4af418586ee9a6aab61738644366426e05316 Patch