CVE-2026-43215

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.

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-25)

CWEs

CWE-667, CWE-362

Published

2026-05-06

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/3969db6b22e3d90d8c5f22ac1a7fe0350a94c136
• https://git.kernel.org/stable/c/601dd3b79769b38d30b693c40afdb2a4b7edf9d0
• https://git.kernel.org/stable/c/8c59eeeeffa1524ef57e173a89a1a3ff539888d5
• https://git.kernel.org/stable/c/953953abb66e52c224057ab91e404284fefeab62
• https://git.kernel.org/stable/c/96c4af418586ee9a6aab61738644366426e05316

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