CVE-2026-53309
ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison
Vexday Risk Score
28Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 9.8EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
26 Jun 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →References
https://git.kernel.org/stable/c/01b61e8dda9b0fdb0d4cda43de25f4e390554d7bhttps://git.kernel.org/stable/c/1fb7f356547d9688822315cd2b205ff0bd5429b4https://git.kernel.org/stable/c/2a0673836f019e7c032acbf48d022d5ccf02a845https://git.kernel.org/stable/c/426cd8eedac89b86148d4478990eeef16e8a2520https://git.kernel.org/stable/c/760ab35040aca8399021fdb9ff1db1089feb7194https://git.kernel.org/stable/c/819d8ebad3200a53de99bd7e297bc428e41ced54https://git.kernel.org/stable/c/c60a2710b73838d250cda57344c049b89abc5d52https://git.kernel.org/stable/c/d5403ae28085761d58b555645bc7d5feadb10073