CVE-2026-53309

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/01b61e8dda9b0fdb0d4cda43de25f4e390554d7b	Patch
https://git.kernel.org/stable/c/1fb7f356547d9688822315cd2b205ff0bd5429b4	Patch
https://git.kernel.org/stable/c/2a0673836f019e7c032acbf48d022d5ccf02a845	Patch
https://git.kernel.org/stable/c/426cd8eedac89b86148d4478990eeef16e8a2520	Patch
https://git.kernel.org/stable/c/760ab35040aca8399021fdb9ff1db1089feb7194	Patch
https://git.kernel.org/stable/c/819d8ebad3200a53de99bd7e297bc428e41ced54	Patch
https://git.kernel.org/stable/c/c60a2710b73838d250cda57344c049b89abc5d52	Patch
https://git.kernel.org/stable/c/d5403ae28085761d58b555645bc7d5feadb10073	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2026-06-26 20:17

Updated : 2026-07-06 20:14

NVD link : CVE-2026-53309

Mitre link : CVE-2026-53309

CVE.ORG link : CVE-2026-53309

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-193

Off-by-one Error

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