CVE-2026-53309

CriticalCVSS 9.8/10Last modified Jul 6, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison

The local-vs-remote region comparison loop uses '<=' instead of '<', causing it to read one entry past the valid range of qr_regions. The other loops in the same function correctly use '<'.

Fix the loop condition to use '<' for consistency and correctness.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-193

Affected software

No affected versions have been published.

Timeline

Published
Jun 26, 2026
Last modified
Jul 6, 2026
NVD status
Analyzed

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CVE-2026-53309: Critical severity, CVSS 9.8 | Vulnix