CVE-2026-53168

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the FUSE (Filesystem in Userspace) implementation where the fuse notify() function fails to restrict pagecache operations on directories. Specifically, the operations FUSE NOTIFY STORE and FUSE NOTIFY RETRIEVE allow the FUSE daemon to read and write pagecache contents. For directories using FOPEN CACHE DIR, the pagecache serves as internal kernel storage that should not be directly accessible by userspace. If the cache contains invalid data, the fuse parse cache() function may trigger a WARN ON() kernel warning.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.