CVE-2026-53309 Details
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.
A vulnerability in the Linux kernel's OCFS2 DLM (Distributed Lock Manager) component has been identified, where an off-by-one error in the region comparison function could lead to incorrect behavior. The issue arises because the comparison loop mistakenly uses '<=' instead of '<', causing it to read one entry beyond the valid range of regions. This vulnerability affects the stable versions of the Linux kernel.
Users can upgrade to the latest stable version of the Linux kernel, where this vulnerability has been fixed. Instructions for downloading the latest version can be found on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/01b61e8dda9b0fdb0d4cda43de25f4e390554d7b | kernel.org | Patch |
| https://git.kernel.org/stable/c/1fb7f356547d9688822315cd2b205ff0bd5429b4 | kernel.org | Patch |
| https://git.kernel.org/stable/c/2a0673836f019e7c032acbf48d022d5ccf02a845 | kernel.org | Patch |
| https://git.kernel.org/stable/c/426cd8eedac89b86148d4478990eeef16e8a2520 | kernel.org | Patch |
| https://git.kernel.org/stable/c/760ab35040aca8399021fdb9ff1db1089feb7194 | kernel.org | Patch |
| https://git.kernel.org/stable/c/819d8ebad3200a53de99bd7e297bc428e41ced54 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c60a2710b73838d250cda57344c049b89abc5d52 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d5403ae28085761d58b555645bc7d5feadb10073 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-193 | Off-by-one Error | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 2.6.37, < 5.10.258 >= 5.11, < 5.15.209 >= 5.16, < 6.1.175 >= 6.2, < 6.6.141 >= 6.7, < 6.12.91 >= 6.13, < 6.18.33 >= 6.19, < 7.0.10 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 6, 2026 | Initial Analysis | [email protected] |
| Jun 28, 2026 | CVE Modified | kernel.org |
| Jun 26, 2026 | New CVE Received | kernel.org |