Skip to content
CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-43215

cifs: Fix locking usage for tcon fields

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 to < 92d197ef7e9bb4994dae2bb17c2f19fa09d219a2affected
  • d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 to < 953953abb66e52c224057ab91e404284fefeab62affected
  • d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 to < 601dd3b79769b38d30b693c40afdb2a4b7edf9d0affected
  • d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 to < 3969db6b22e3d90d8c5f22ac1a7fe0350a94c136affected
  • d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 to < 8c59eeeeffa1524ef57e173a89a1a3ff539888d5affected
  • d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 to < 96c4af418586ee9a6aab61738644366426e05316affected

Linux Linux

Default version status: affected

  • 6.0affected
  • 0 to < 6.0unaffected
  • 6.1.191 to ≤ 6.1.*unaffected
  • 6.6.128 to ≤ 6.6.*unaffected
  • 6.12.75 to ≤ 6.12.*unaffected
  • 6.18.16 to ≤ 6.18.*unaffected
  • 6.19.6 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References