{"api_version":"1","generated_at":"2026-09-18T01:06:22+00:00","cve":"CVE-2026-89745","urls":{"html":"https://cve.report/CVE-2026-89745","api":"https://cve.report/api/cve/CVE-2026-89745.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89745","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89745"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:20:05","updated_at":"2026-09-11 20:20:05"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/e7f6a6b5741d16fdac7adaecbe0fa52ae756f208","name":"https://git.kernel.org/stable/c/e7f6a6b5741d16fdac7adaecbe0fa52ae756f208","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f81808de37338aac8e167f99bfae647b1b835c70","name":"https://git.kernel.org/stable/c/f81808de37338aac8e167f99bfae647b1b835c70","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89745","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89745","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 651fdda8406d42a5004c5c79f269540a85d6a1ab e7f6a6b5741d16fdac7adaecbe0fa52ae756f208 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 651fdda8406d42a5004c5c79f269540a85d6a1ab f81808de37338aac8e167f99bfae647b1b835c70 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"89745","cve":"CVE-2026-89745","epss":"0.001550000","percentile":"0.050070000","score_date":"2026-09-14","updated_at":"2026-09-15 00:00:43"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/debugfs/file.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e7f6a6b5741d16fdac7adaecbe0fa52ae756f208","status":"affected","version":"651fdda8406d42a5004c5c79f269540a85d6a1ab","versionType":"git"},{"lessThan":"f81808de37338aac8e167f99bfae647b1b835c70","status":"affected","version":"651fdda8406d42a5004c5c79f269540a85d6a1ab","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/debugfs/file.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:46:50.758Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e7f6a6b5741d16fdac7adaecbe0fa52ae756f208"},{"url":"https://git.kernel.org/stable/c/f81808de37338aac8e167f99bfae647b1b835c70"}],"title":"debugfs: Fix lockdown check for mmap_prepare","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89745","datePublished":"2026-09-11T19:46:50.758Z","dateReserved":"2026-09-11T19:38:34.762Z","dateUpdated":"2026-09-11T19:46:50.758Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:20:05","lastModifiedDate":"2026-09-11 20:20:05","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89745","Ordinal":"1","Title":"debugfs: Fix lockdown check for mmap_prepare","CVE":"CVE-2026-89745","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89745","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"debugfs: Fix lockdown check for mmap_prepare"}]}}}