CVE-2026-43215
cifs: Fix locking usage for tcon fields
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 6, 2026 |
| Last Updated | May 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 953953abb66e52c224057ab91e404284fefeab62 d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 601dd3b79769b38d30b693c40afdb2a4b7edf9d0 d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 3969db6b22e3d90d8c5f22ac1a7fe0350a94c136 d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 8c59eeeeffa1524ef57e173a89a1a3ff539888d5 d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 96c4af418586ee9a6aab61738644366426e05316
Linux / Linux
6.0
References
git.kernel.org: https://git.kernel.org/stable/c/953953abb66e52c224057ab91e404284fefeab62 git.kernel.org: https://git.kernel.org/stable/c/601dd3b79769b38d30b693c40afdb2a4b7edf9d0 git.kernel.org: https://git.kernel.org/stable/c/3969db6b22e3d90d8c5f22ac1a7fe0350a94c136 git.kernel.org: https://git.kernel.org/stable/c/8c59eeeeffa1524ef57e173a89a1a3ff539888d5 git.kernel.org: https://git.kernel.org/stable/c/96c4af418586ee9a6aab61738644366426e05316