CVE-2026-80955

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

Description A use-after-free (UAF) condition exists in the dm-pcache component within the kset replay() function. The issue occurs when key->seg gen is stale, leading to a call to cache key put(key) followed by an access to key->cache pos.cache seg as an argument for cache seg get(), which accesses memory that has already been freed. Additionally, the system performs invalid segment operations by setting the cache->seg map bit and calling cache seg get() for expired invalid keys where the segment data is no longer valid.

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