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Description

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.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-06 | Updated 2026-05-08 | Assigner Linux




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

Product status

Default status
unaffected

d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 (git) before 953953abb66e52c224057ab91e404284fefeab62
affected

d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 (git) before 601dd3b79769b38d30b693c40afdb2a4b7edf9d0
affected

d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 (git) before 3969db6b22e3d90d8c5f22ac1a7fe0350a94c136
affected

d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 (git) before 8c59eeeeffa1524ef57e173a89a1a3ff539888d5
affected

d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 (git) before 96c4af418586ee9a6aab61738644366426e05316
affected

Default status
affected

6.0
affected

Any version before 6.0
unaffected

6.6.128 (semver)
unaffected

6.12.75 (semver)
unaffected

6.18.16 (semver)
unaffected

6.19.6 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/953953abb66e52c224057ab91e404284fefeab62

git.kernel.org/...c/601dd3b79769b38d30b693c40afdb2a4b7edf9d0

git.kernel.org/...c/3969db6b22e3d90d8c5f22ac1a7fe0350a94c136

git.kernel.org/...c/8c59eeeeffa1524ef57e173a89a1a3ff539888d5

git.kernel.org/...c/96c4af418586ee9a6aab61738644366426e05316

cve.org (CVE-2026-43215)

nvd.nist.gov (CVE-2026-43215)

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