CVE-2026-53309

CRITICAL

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

Title source: cna
STIX 2.1

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.

References (8)

Core 8

Scores

CVSS v3 9.8
EPSS 0.0040
EPSS Percentile 32.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-193
Status published
Products (26)
linux/Kernel 2.6.37 - 5.10.258linux
linux/Kernel 5.11.0 - 5.15.209linux
linux/Kernel 5.16.0 - 6.1.175linux
linux/Kernel 6.13.0 - 6.18.33linux
linux/Kernel 6.19.0 - 7.0.10linux
linux/Kernel 6.2.0 - 6.6.141linux
linux/Kernel 6.7.0 - 6.12.91linux
Linux/Linux < 2.6.37
Linux/Linux 2.6.37
Linux/Linux 5.10.258 - 5.10.*
... and 16 more
Published Jun 26, 2026
Tracked Since Jun 27, 2026