CVE-2026-43215
MediumSummary
A vulnerability related to locking usage for tcon fields in the Linux kernel has been resolved in the CIFS module. Previously, cifs_tcp_ses_lock was used to protect many objects, which has been improved by introducing dedicated locks for server, session, and tcon.
Risk Assessment
Improper lock management may lead to synchronization issues and potential data leaks. Organizations should be aware that unpatched versions may be vulnerable to attacks related to improper access to resources.
Recommendation
It is recommended to update the Linux kernel to the latest version to benefit from the fixes related to lock management in the CIFS module. Regular monitoring and updating of systems is crucial for maintaining security.
Original NVD description (English source)
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