{"id":"CVE-2026-90318","revision":"480fbf0d0b6b4ab29bc5b2118bc89a9c","records":[{"revision":"480fbf0d0b6b4ab29bc5b2118bc89a9c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90318","aliases":[],"title":"fat: release buffer head after rebuilding parent","description":"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.","state":0,"publishedAt":"2026-09-17T16:08:36.174+00:00","modifiedAt":"2026-10-19T09:01:34.596+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/fat/nfs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"f1e6fb0ab451dae8523fbb8c119a653b2730e938\",\n                            \"lessThan\": \"5e44b6944e11fd6647f028219ad0be4e85e9acee\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1e6fb0ab451dae8523fbb8c119a653b2730e938\",\n                            \"lessThan\": \"d2a86329152c69a6200c15b2bf618755f8563826\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1e6fb0ab451dae8523fbb8c119a653b2730e938\",\n                            \"lessThan\": \"0f18d712ba9c980e05b7e33a27cde4fe3ed2d393\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1e6fb0ab451dae8523fbb8c119a653b2730e938\",\n                            \"lessThan\": \"e38587d98d1ceac608420052c0cdd901d25878f3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1e6fb0ab451dae8523fbb8c119a653b2730e938\",\n                            \"lessThan\": \"c6a67aa438179cad40f8ae45469e304338d65c0a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1e6fb0ab451dae8523fbb8c119a653b2730e938\",\n                            \"lessThan\": \"571ea4263d69df1b48578e4314a828ecd0604755\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1e6fb0ab451dae8523fbb8c119a653b2730e938\",\n                            \"lessThan\": \"7565e44507634514e3e1899d3acad3de43f7a2c1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1e6fb0ab451dae8523fbb8c119a653b2730e938\",\n                            \"lessThan\": \"83e98dbf19ab64e8528e101e20f8d50e1aaa68a8\",\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/fat/nfs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\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/5e44b6944e11fd6647f028219ad0be4e85e9acee","https://git.kernel.org/stable/c/d2a86329152c69a6200c15b2bf618755f8563826","https://git.kernel.org/stable/c/0f18d712ba9c980e05b7e33a27cde4fe3ed2d393","https://git.kernel.org/stable/c/e38587d98d1ceac608420052c0cdd901d25878f3","https://git.kernel.org/stable/c/c6a67aa438179cad40f8ae45469e304338d65c0a","https://git.kernel.org/stable/c/571ea4263d69df1b48578e4314a828ecd0604755","https://git.kernel.org/stable/c/7565e44507634514e3e1899d3acad3de43f7a2c1","https://git.kernel.org/stable/c/83e98dbf19ab64e8528e101e20f8d50e1aaa68a8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90318","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90318","identifiers":["CVE-2026-90318"]},"retained":false,"historicalAffected":[]}],"coverage":[]}