Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.37, < 5.10.258 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/01b61e8dda9b0fdb0d4cda43de25f4e390554d7bPatch
- https://git.kernel.org/stable/c/1fb7f356547d9688822315cd2b205ff0bd5429b4Patch
- https://git.kernel.org/stable/c/2a0673836f019e7c032acbf48d022d5ccf02a845Patch
- https://git.kernel.org/stable/c/426cd8eedac89b86148d4478990eeef16e8a2520Patch
- https://git.kernel.org/stable/c/760ab35040aca8399021fdb9ff1db1089feb7194Patch
- https://git.kernel.org/stable/c/819d8ebad3200a53de99bd7e297bc428e41ced54Patch
- https://git.kernel.org/stable/c/c60a2710b73838d250cda57344c049b89abc5d52Patch
- https://git.kernel.org/stable/c/d5403ae28085761d58b555645bc7d5feadb10073Patch
FAQ
What is CVE-2026-53309?
CVE-2026-53309 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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...
How severe is CVE-2026-53309?
CVE-2026-53309 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-53309?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.