Answer in brief
CVE-2026-53309 records a Critical severity (CVSS 9.8) vulnerability in ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-53309 records a Critical severity (CVSS 9.8) vulnerability in ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ea2034416b54700e30371f2ad6517cbb94674083 <760ab35040aca8399021fdb9ff1db1089feb7194 || >=ea2034416b54700e30371f2ad6517cbb94674083 <c60a2710b73838d250cda57344c049b89abc5d52 || >=ea2034416b54700e30371f2ad6517cbb94674083 <2a0673836f019e7c032acbf48d022d5ccf02a845 || >=ea2034416b54700e30371f2ad6517cbb94674083 <819d8ebad3200a53de99bd7e297bc428e41ced54 || >=ea2034416b54700e30371f2ad6517cbb94674083 <d5403ae28085761d58b555645bc7d5feadb10073 || >=ea2034416b54700e30371f2ad6517cbb94674083 <1fb7f356547d9688822315cd2b205ff0bd5429b4 || >=ea2034416b54700e30371f2ad6517cbb94674083 <426cd8eedac89b86148d4478990eeef16e8a2520 || >=ea2034416b54700e30371f2ad6517cbb94674083 <01b61e8dda9b0fdb0d4cda43de25f4e390554d7b | 760ab35040aca8399021fdb9ff1db1089feb7194, c60a2710b73838d250cda57344c049b89abc5d52, 2a0673836f019e7c032acbf48d022d5ccf02a845, 819d8ebad3200a53de99bd7e297bc428e41ced54, d5403ae28085761d58b555645bc7d5feadb10073, 1fb7f356547d9688822315cd2b205ff0bd5429b4, 426cd8eedac89b86148d4478990eeef16e8a2520, 01b61e8dda9b0fdb0d4cda43de25f4e390554d7b |
| Linux/Linuxgeneric | 2.6.37 | Not reported |
Published upstream
Jun 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 26, 2026
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.
Quoted source text, attributed separately from HOL analysis.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ea2034416b54700e30371f2ad6517cbb94674083 <760ab35040aca8399021fdb9ff1db1089feb7194 || >=ea2034416b54700e30371f2ad6517cbb94674083 <c60a2710b73838d250cda57344c049b89abc5d52 || >=ea2034416b54700e30371f2ad6517cbb94674083 <2a0673836f019e7c032acbf48d022d5ccf02a845 || >=ea2034416b54700e30371f2ad6517cbb94674083 <819d8ebad3200a53de99bd7e297bc428e41ced54 || >=ea2034416b54700e30371f2ad6517cbb94674083 <d5403ae28085761d58b555645bc7d5feadb10073 || >=ea2034416b54700e30371f2ad6517cbb94674083 <1fb7f356547d9688822315cd2b205ff0bd5429b4 || >=ea2034416b54700e30371f2ad6517cbb94674083 <426cd8eedac89b86148d4478990eeef16e8a2520 || >=ea2034416b54700e30371f2ad6517cbb94674083 <01b61e8dda9b0fdb0d4cda43de25f4e390554d7b | 760ab35040aca8399021fdb9ff1db1089feb7194, c60a2710b73838d250cda57344c049b89abc5d52, 2a0673836f019e7c032acbf48d022d5ccf02a845, 819d8ebad3200a53de99bd7e297bc428e41ced54, d5403ae28085761d58b555645bc7d5feadb10073, 1fb7f356547d9688822315cd2b205ff0bd5429b4, 426cd8eedac89b86148d4478990eeef16e8a2520, 01b61e8dda9b0fdb0d4cda43de25f4e390554d7b |
| Linux/Linuxgeneric | 2.6.37 | Not reported |
Published upstream
Jun 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 26, 2026
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.
Quoted source text, attributed separately from HOL analysis.