{"id":"CVE-2026-53309","summary":"ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison","details":"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 '\u003c=' instead of '\u003c',\ncausing it to read one entry past the valid range of qr_regions.  The\nother loops in the same function correctly use '\u003c'.\n\nFix the loop condition to use '\u003c' for consistency and correctness.","modified":"2026-07-08T08:07:25.156637862Z","published":"2026-06-26T19:41:03.505Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53309.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/01b61e8dda9b0fdb0d4cda43de25f4e390554d7b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1fb7f356547d9688822315cd2b205ff0bd5429b4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2a0673836f019e7c032acbf48d022d5ccf02a845"},{"type":"WEB","url":"https://git.kernel.org/stable/c/426cd8eedac89b86148d4478990eeef16e8a2520"},{"type":"WEB","url":"https://git.kernel.org/stable/c/760ab35040aca8399021fdb9ff1db1089feb7194"},{"type":"WEB","url":"https://git.kernel.org/stable/c/819d8ebad3200a53de99bd7e297bc428e41ced54"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c60a2710b73838d250cda57344c049b89abc5d52"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d5403ae28085761d58b555645bc7d5feadb10073"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53309.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53309"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"ea2034416b54700e30371f2ad6517cbb94674083"},{"fixed":"760ab35040aca8399021fdb9ff1db1089feb7194"},{"fixed":"c60a2710b73838d250cda57344c049b89abc5d52"},{"fixed":"2a0673836f019e7c032acbf48d022d5ccf02a845"},{"fixed":"819d8ebad3200a53de99bd7e297bc428e41ced54"},{"fixed":"d5403ae28085761d58b555645bc7d5feadb10073"},{"fixed":"1fb7f356547d9688822315cd2b205ff0bd5429b4"},{"fixed":"426cd8eedac89b86148d4478990eeef16e8a2520"},{"fixed":"01b61e8dda9b0fdb0d4cda43de25f4e390554d7b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53309.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.37"},{"fixed":"5.10.258"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.141"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.91"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53309.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}