CVE-2024-43892

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

Description The issue is related to the protection of concurrent access to mem cgroup idr in the Linux kernel. The problem arises when idr remove() is called concurrently for different memcgs when they reach a reference count of zero. This can cause multiple memcgs to acquire the same ID, leading to crashes due to missing list lru one when other memcgs access the list lru. The kernel crashes were observed at a low frequency in the fleet, particularly in the list lru code, including list lru add(), list lru del(), and reparenting code.

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