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CVE-2026-53309

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

Published: Jun 26, 2026Updated: Jun 30, 2026 Sources: CVE List NVD
9.8CRITICAL
NVD MITRE
EPSS Score
0.4%
Top 67.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Affected Products

Linux
oss-projectaka the linux kernel
LinuxOn-premOS
Operating Systems / linux-distro

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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References

https://git.kernel.org/stable/c/01b61e8dda9b0fdb0d4cda43de25f4e390554d7b
git.kernel.org
https://git.kernel.org/stable/c/1fb7f356547d9688822315cd2b205ff0bd5429b4
git.kernel.org
https://git.kernel.org/stable/c/2a0673836f019e7c032acbf48d022d5ccf02a845
git.kernel.org
and 5 more references View all →

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