CVE-2026-53062
kernel: dm cache policy smq: fix missing locks in invalidating cache blocks
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 24, 2026
Updated · November 4, 2026
Description
A flaw was found in the Linux kernel's device-mapper (dm) cache policy, specifically within the smq module. In passthrough mode, the invalidate_mapping operation lacks proper locking, allowing for concurrent access. This can lead to data races, resulting in data corruption or use-after-free issues, which may cause system instability or a denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-414 · Missing Lock Check