CVE-2026-53060
kernel: dm cache metadata: fix memory leak on metadata abort retry
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 24, 2026
Updated · July 22, 2026
Description
A flaw was found in the Linux kernel's device-mapper (dm) cache metadata. This memory leak vulnerability occurs when the dm_cache_metadata_abort function fails to acquire the root lock because the block manager is read-only, leading to the improper release of a temporary block manager. A local attacker could exploit this by repeatedly reloading a new table while the metadata is read-only, potentially leading to memory exhaustion and a Denial of Service (DoS).
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime