CVE-2026-43215

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxd7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 953953abb66e52c224057ab91e404284fefeab62affected
LinuxLinuxd7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 601dd3b79769b38d30b693c40afdb2a4b7edf9d0affected
LinuxLinuxd7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 3969db6b22e3d90d8c5f22ac1a7fe0350a94c136affected
LinuxLinuxd7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 8c59eeeeffa1524ef57e173a89a1a3ff539888d5affected
LinuxLinuxd7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 96c4af418586ee9a6aab61738644366426e05316affected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.6.128 <= 6.6.*unaffected
LinuxLinux6.12.75 <= 6.12.*unaffected
LinuxLinux6.18.16 <= 6.18.*unaffected
LinuxLinux6.19.6 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References