Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.0, < 6.6.128 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/3969db6b22e3d90d8c5f22ac1a7fe0350a94c136Patch
- https://git.kernel.org/stable/c/601dd3b79769b38d30b693c40afdb2a4b7edf9d0Patch
- https://git.kernel.org/stable/c/8c59eeeeffa1524ef57e173a89a1a3ff539888d5Patch
- https://git.kernel.org/stable/c/953953abb66e52c224057ab91e404284fefeab62Patch
- https://git.kernel.org/stable/c/96c4af418586ee9a6aab61738644366426e05316Patch
FAQ
What is CVE-2026-43215?
CVE-2026-43215 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 ser...
How severe is CVE-2026-43215?
CVE-2026-43215 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43215?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.