CVE-2026-90318

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90318", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.801Z", "datePublished": "2026-09-17T16:08:36.174Z", "dateUpdated": "2026-10-19T09:01:34.596Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:01:34.596Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfat: release buffer head after rebuilding parent\n\nfat_scan_logstart() leaves the matching directory entry's buffer head in\nsinfo.bh for the caller to release, just like fat_scan().\n\nfat_rebuild_parent() uses the directory entry to rebuild the parent inode\nfor the nostale_ro NFS export path, but does not release sinfo.bh after a\nsuccessful scan. Release it once fat_build_inode() has consumed the\ndirectory entry data."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/fat/nfs.c"], "versions": [{"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "lessThan": "5e44b6944e11fd6647f028219ad0be4e85e9acee", "status": "affected", "versionType": "git"}, {"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "lessThan": "d2a86329152c69a6200c15b2bf618755f8563826", "status": "affected", "versionType": "git"}, {"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "lessThan": "0f18d712ba9c980e05b7e33a27cde4fe3ed2d393", "status": "affected", "versionType": "git"}, {"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "lessThan": "e38587d98d1ceac608420052c0cdd901d25878f3", "status": "affected", "versionType": "git"}, {"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "lessThan": "c6a67aa438179cad40f8ae45469e304338d65c0a", "status": "affected", "versionType": "git"}, {"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "lessThan": "571ea4263d69df1b48578e4314a828ecd0604755", "status": "affected", "versionType": "git"}, {"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "lessThan": "7565e44507634514e3e1899d3acad3de43f7a2c1", "status": "affected", "versionType": "git"}, {"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "lessThan": "83e98dbf19ab64e8528e101e20f8d50e1aaa68a8", "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/fat/nfs.c"], "versions": [{"version": "3.10", "status": "affected"}, {"version": "0", "lessThan": "3.10", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "3.10", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5e44b6944e11fd6647f028219ad0be4e85e9acee"}, {"url": "https://git.kernel.org/stable/c/d2a86329152c69a6200c15b2bf618755f8563826"}, {"url": "https://git.kernel.org/stable/c/0f18d712ba9c980e05b7e33a27cde4fe3ed2d393"}, {"url": "https://git.kernel.org/stable/c/e38587d98d1ceac608420052c0cdd901d25878f3"}, {"url": "https://git.kernel.org/stable/c/c6a67aa438179cad40f8ae45469e304338d65c0a"}, {"url": "https://git.kernel.org/stable/c/571ea4263d69df1b48578e4314a828ecd0604755"}, {"url": "https://git.kernel.org/stable/c/7565e44507634514e3e1899d3acad3de43f7a2c1"}, {"url": "https://git.kernel.org/stable/c/83e98dbf19ab64e8528e101e20f8d50e1aaa68a8"}], "title": "fat: release buffer head after rebuilding parent", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/fat/nfs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "5e44b6944e11fd6647f028219ad0be4e85e9acee", "status": "affected", "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "versionType": "git"}, {"lessThan": "d2a86329152c69a6200c15b2bf618755f8563826", "status": "affected", "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "versionType": "git"}, {"lessThan": "0f18d712ba9c980e05b7e33a27cde4fe3ed2d393", "status": "affected", "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "versionType": "git"}, {"lessThan": "e38587d98d1ceac608420052c0cdd901d25878f3", "status": "affected", "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "versionType": "git"}, {"lessThan": "c6a67aa438179cad40f8ae45469e304338d65c0a", "status": "affected", "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "versionType": "git"}, {"lessThan": "571ea4263d69df1b48578e4314a828ecd0604755", "status": "affected", "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "versionType": "git"}, {"lessThan": "7565e44507634514e3e1899d3acad3de43f7a2c1", "status": "affected", "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "versionType": "git"}, {"lessThan": "83e98dbf19ab64e8528e101e20f8d50e1aaa68a8", "status": "affected", "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/fat/nfs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.10"}, {"lessThan": "3.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.270", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfat: release buffer head after rebuilding parent\n\nfat_scan_logstart() leaves the matching directory entry's buffer head in\nsinfo.bh for the caller to release, just like fat_scan().\n\nfat_rebuild_parent() uses the directory entry to rebuild the parent inode\nfor the nostale_ro NFS export path, but does not release sinfo.bh after a\nsuccessful scan. Release it once fat_build_inode() has consumed the\ndirectory entry data."}], "id": "CVE-2026-90318", "lastModified": "2026-10-19T09:19:25.783", "metrics": {}, "published": "2026-09-17T17:17:29.683", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0f18d712ba9c980e05b7e33a27cde4fe3ed2d393"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/571ea4263d69df1b48578e4314a828ecd0604755"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5e44b6944e11fd6647f028219ad0be4e85e9acee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7565e44507634514e3e1899d3acad3de43f7a2c1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/83e98dbf19ab64e8528e101e20f8d50e1aaa68a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c6a67aa438179cad40f8ae45469e304338d65c0a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d2a86329152c69a6200c15b2bf618755f8563826"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e38587d98d1ceac608420052c0cdd901d25878f3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1e6fb0ab451dae8523fbb8c119a653b2730e938,5e44b6944e11fd6647f028219ad0be4e85e9acee)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1e6fb0ab451dae8523fbb8c119a653b2730e938,d2a86329152c69a6200c15b2bf618755f8563826)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1e6fb0ab451dae8523fbb8c119a653b2730e938,0f18d712ba9c980e05b7e33a27cde4fe3ed2d393)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1e6fb0ab451dae8523fbb8c119a653b2730e938,e38587d98d1ceac608420052cdd901d25878f3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1e6fb0ab451dae8523fbb8c119a653b2730e938,c6a67aa438179cad40f8ae45469e304338d65c0a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1e6fb0ab451dae8523fbb8c119a653b2730e938,571ea4263d69df1b48578e4314a828ecd0604755)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1e6fb0ab451dae8523fbb8c119a653b2730e938,7565e44507634514e3e1899d3acad3de43f7a2c1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1e6fb0ab451dae8523fbb8c119a653b2730e938,83e98dbf19ab64e8528e101e20f8d50e1aaa68a8)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.10.270,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.221,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.188,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.157,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.110,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.52,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.6,7.2.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-19T05:00:09.582276+00:00", "updated": "2026-09-19T08:30:16.783663+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-772"]}