{"id":"CVE-2026-53309","aliases":[],"url":"https://o3.security/vulnerability/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 '<=' 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.","published":"2026-06-26T19:41:03.505Z","modified":"2026-08-12T03:51:13.998682673Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.00399,"percentile":0.32982,"asOf":"2026-08-14"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.10.258"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:13.998682673Z"}}