{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53309", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.397Z", "datePublished": "2026-06-26T19:41:03.505Z", "dateUpdated": "2026-06-28T06:41:30.026Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-28T06:41:30.026Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison\n\nThe local-vs-remote region comparison loop uses '<=' instead of '<',\ncausing it to read one entry past the valid range of qr_regions. The\nother loops in the same function correctly use '<'.\n\nFix the loop condition to use '<' for consistency and correctness."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ocfs2/dlm/dlmdomain.c"], "versions": [{"version": "ea2034416b54700e30371f2ad6517cbb94674083", "lessThan": "760ab35040aca8399021fdb9ff1db1089feb7194", "status": "affected", "versionType": "git"}, {"version": "ea2034416b54700e30371f2ad6517cbb94674083", "lessThan": "c60a2710b73838d250cda57344c049b89abc5d52", "status": "affected", "versionType": "git"}, {"version": "ea2034416b54700e30371f2ad6517cbb94674083", "lessThan": "2a0673836f019e7c032acbf48d022d5ccf02a845", "status": "affected", "versionType": "git"}, {"version": "ea2034416b54700e30371f2ad6517cbb94674083", "lessThan": "819d8ebad3200a53de99bd7e297bc428e41ced54", "status": "affected", "versionType": "git"}, {"version": "ea2034416b54700e30371f2ad6517cbb94674083", "lessThan": "d5403ae28085761d58b555645bc7d5feadb10073", "status": "affected", "versionType": "git"}, {"version": "ea2034416b54700e30371f2ad6517cbb94674083", "lessThan": "1fb7f356547d9688822315cd2b205ff0bd5429b4", "status": "affected", "versionType": "git"}, {"version": "ea2034416b54700e30371f2ad6517cbb94674083", "lessThan": "426cd8eedac89b86148d4478990eeef16e8a2520", "status": "affected", "versionType": "git"}, {"version": "ea2034416b54700e30371f2ad6517cbb94674083", "lessThan": "01b61e8dda9b0fdb0d4cda43de25f4e390554d7b", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ocfs2/dlm/dlmdomain.c"], "versions": [{"version": "2.6.37", "status": "affected"}, {"version": "0", "lessThan": "2.6.37", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "5.10.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/760ab35040aca8399021fdb9ff1db1089feb7194"}, {"url": "https://git.kernel.org/stable/c/c60a2710b73838d250cda57344c049b89abc5d52"}, {"url": "https://git.kernel.org/stable/c/2a0673836f019e7c032acbf48d022d5ccf02a845"}, {"url": "https://git.kernel.org/stable/c/819d8ebad3200a53de99bd7e297bc428e41ced54"}, {"url": "https://git.kernel.org/stable/c/d5403ae28085761d58b555645bc7d5feadb10073"}, {"url": "https://git.kernel.org/stable/c/1fb7f356547d9688822315cd2b205ff0bd5429b4"}, {"url": "https://git.kernel.org/stable/c/426cd8eedac89b86148d4478990eeef16e8a2520"}, {"url": "https://git.kernel.org/stable/c/01b61e8dda9b0fdb0d4cda43de25f4e390554d7b"}], "title": "ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison", "x_generator": {"engine": "bippy-1.2.0"}}}}

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