Incorrect calculation in Linux kernel - CVE-2026-93197
Published: September 18, 2026
Vulnerability identifier: #VU150809
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93197
CWE-ID: CWE-682
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to incorrect LRU size accounting in lruvec_reparent_lru() and lru_gen_reparent_memcg() when reparenting LRU folios during memory cgroup offlining. A local user can offline a memory cgroup to cause a denial of service.
The offlined cgroup can retain stale LRU size counters while it remains subject to memory-cgroup iteration and reclaim scanning.
Affected software
Linux kernel
How to mitigate CVE-2026-93197
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3