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CVE-2026-53060

kernel: dm cache metadata: fix memory leak on metadata abort retry

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Severity

Low

Red Hat Product Security

5.5

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 · 5.5
CVSS: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