ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison
Summary
| CVE | CVE-2026-53309 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-26 20:17:24 UTC |
| Updated | 2026-06-28 08:16:43 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 9.8 CRITICAL from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.001650000 probability, percentile 0.060600000 (date 2026-06-27)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected ea2034416b54700e30371f2ad6517cbb94674083 760ab35040aca8399021fdb9ff1db1089feb7194 git | Not specified |
| CNA | Linux | Linux | affected ea2034416b54700e30371f2ad6517cbb94674083 c60a2710b73838d250cda57344c049b89abc5d52 git | Not specified |
| CNA | Linux | Linux | affected ea2034416b54700e30371f2ad6517cbb94674083 2a0673836f019e7c032acbf48d022d5ccf02a845 git | Not specified |
| CNA | Linux | Linux | affected ea2034416b54700e30371f2ad6517cbb94674083 819d8ebad3200a53de99bd7e297bc428e41ced54 git | Not specified |
| CNA | Linux | Linux | affected ea2034416b54700e30371f2ad6517cbb94674083 d5403ae28085761d58b555645bc7d5feadb10073 git | Not specified |
| CNA | Linux | Linux | affected ea2034416b54700e30371f2ad6517cbb94674083 1fb7f356547d9688822315cd2b205ff0bd5429b4 git | Not specified |
| CNA | Linux | Linux | affected ea2034416b54700e30371f2ad6517cbb94674083 426cd8eedac89b86148d4478990eeef16e8a2520 git | Not specified |
| CNA | Linux | Linux | affected ea2034416b54700e30371f2ad6517cbb94674083 01b61e8dda9b0fdb0d4cda43de25f4e390554d7b git | Not specified |
| CNA | Linux | Linux | affected 2.6.37 | Not specified |
| CNA | Linux | Linux | unaffected 2.6.37 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.258 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.175 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.141 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.91 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.33 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.10 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/760ab35040aca8399021fdb9ff1db1089feb7194 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1fb7f356547d9688822315cd2b205ff0bd5429b4 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d5403ae28085761d58b555645bc7d5feadb10073 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c60a2710b73838d250cda57344c049b89abc5d52 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/819d8ebad3200a53de99bd7e297bc428e41ced54 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/426cd8eedac89b86148d4478990eeef16e8a2520 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2a0673836f019e7c032acbf48d022d5ccf02a845 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/01b61e8dda9b0fdb0d4cda43de25f4e390554d7b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.