A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.12.90/6.18.32/7.0.9. This affects the function fsnotify_recalc_mask of the component fsnotify. Performing a manipulation of the argument lock results in improper locking.

This vulnerability was named CVE-2026-52990. The attack needs to be approached within the local network. There is no available exploit.

It is advisable to upgrade the affected component.