{"id":"CVE-2026-89745","revision":"5acf47edb4c140ecaa7c0055ab0c676b","records":[{"revision":"5acf47edb4c140ecaa7c0055ab0c676b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89745","aliases":[],"title":"debugfs: Fix lockdown check for mmap_prepare","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndebugfs: Fix lockdown check for mmap_prepare\n\nCommit 651fdda8406d (\"relay: update relay to use mmap_prepare\")\nchanged the `mmap` file operation to `mmap_prepare` for relayfs, but\nthe lockdown check in debugfs was not updated accordingly.\n\nThis prevents debugfs from being locked down when the kernel is in\nintegrity mode if a file uses `mmap_prepare` but not `mmap`.\n\nSince the conversion to `mmap_prepare` across the kernel is not yet\ncomplete, update the lockdown check to look for both `mmap` and\n`mmap_prepare` to ensure comprehensive coverage.","state":0,"publishedAt":"2026-09-11T19:46:50.758+00:00","modifiedAt":"2026-10-19T08:51:59.176+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/debugfs/file.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"651fdda8406d42a5004c5c79f269540a85d6a1ab\",\n                            \"lessThan\": \"e7f6a6b5741d16fdac7adaecbe0fa52ae756f208\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"651fdda8406d42a5004c5c79f269540a85d6a1ab\",\n                            \"lessThan\": \"f81808de37338aac8e167f99bfae647b1b835c70\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/debugfs/file.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/e7f6a6b5741d16fdac7adaecbe0fa52ae756f208","https://git.kernel.org/stable/c/f81808de37338aac8e167f99bfae647b1b835c70"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89745","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89745","identifiers":["CVE-2026-89745"]},"retained":false,"historicalAffected":[]}],"coverage":[]}