{"id":"CVE-2025-68266","revision":"7a3c7f0a8dd84ff39ff007d9479b6460","records":[{"revision":"7a3c7f0a8dd84ff39ff007d9479b6460","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-68266","aliases":[],"title":"bfs: Reconstruct file type when loading from disk","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbfs: Reconstruct file type when loading from disk\n\nsyzbot is reporting that S_IFMT bits of inode->i_mode can become bogus when\nthe S_IFMT bits of the 32bits \"mode\" field loaded from disk are corrupted\nor when the 32bits \"attributes\" field loaded from disk are corrupted.\n\nA documentation says that BFS uses only lower 9 bits of the \"mode\" field.\nBut I can't find an explicit explanation that the unused upper 23 bits\n(especially, the S_IFMT bits) are initialized with 0.\n\nTherefore, ignore the S_IFMT bits of the \"mode\" field loaded from disk.\nAlso, verify that the value of the \"attributes\" field loaded from disk is\neither BFS_VREG or BFS_VDIR (because BFS supports only regular files and\nthe root directory).","state":0,"publishedAt":"2025-12-16T14:47:06.24+00:00","modifiedAt":"2026-10-15T01:09:48.894+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/bfs/inode.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\n                            \"lessThan\": \"d0c5ec1f57d8fbb953f166a27d9d32473dc8f3e4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\n                            \"lessThan\": \"aeccd6743ee4fdd1ab8cfcbb5b9a20b613418f6d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\n                            \"lessThan\": \"8f73336b75bd3457b6f9410f2a0601a238f32238\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\n                            \"lessThan\": \"a9f626396bfe66f49b743601e862767928237cc0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\n                            \"lessThan\": \"77899444d46162aeb65f229590c26ba266864223\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\n                            \"lessThan\": \"a8cb796e7e2cb7971311ba236922f5e7e1be77e6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\n                            \"lessThan\": \"34ab4c75588c07cca12884f2bf6b0347c7a13872\",\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/bfs/inode.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.248\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.198\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.160\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.120\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.62\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17.12\",\n                            \"lessThanOrEqual\": \"6.17.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/d0c5ec1f57d8fbb953f166a27d9d32473dc8f3e4","https://git.kernel.org/stable/c/aeccd6743ee4fdd1ab8cfcbb5b9a20b613418f6d","https://git.kernel.org/stable/c/8f73336b75bd3457b6f9410f2a0601a238f32238","https://git.kernel.org/stable/c/a9f626396bfe66f49b743601e862767928237cc0","https://git.kernel.org/stable/c/77899444d46162aeb65f229590c26ba266864223","https://git.kernel.org/stable/c/a8cb796e7e2cb7971311ba236922f5e7e1be77e6","https://git.kernel.org/stable/c/34ab4c75588c07cca12884f2bf6b0347c7a13872"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-68266","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-68266","identifiers":["CVE-2025-68266"]},"retained":false,"historicalAffected":[]}],"coverage":[]}