CVE-2026-53309

high

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

https://git.kernel.org/stable/c/d5403ae28085761d58b555645bc7d5feadb10073

https://git.kernel.org/stable/c/c60a2710b73838d250cda57344c049b89abc5d52

https://git.kernel.org/stable/c/819d8ebad3200a53de99bd7e297bc428e41ced54

https://git.kernel.org/stable/c/760ab35040aca8399021fdb9ff1db1089feb7194

https://git.kernel.org/stable/c/426cd8eedac89b86148d4478990eeef16e8a2520

https://git.kernel.org/stable/c/2a0673836f019e7c032acbf48d022d5ccf02a845

https://git.kernel.org/stable/c/1fb7f356547d9688822315cd2b205ff0bd5429b4

https://git.kernel.org/stable/c/01b61e8dda9b0fdb0d4cda43de25f4e390554d7b

Details

Source: Mitre, NVD

Published: 2026-06-26

Updated: 2026-06-26

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High

EPSS

EPSS: 0.00165