{"id":"CVE-2026-46078","revision":"8fe86e55335b4d059f8170db1e1026c4","records":[{"revision":"8fe86e55335b4d059f8170db1e1026c4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-46078","aliases":[],"title":"erofs: fix the out-of-bounds nameoff handling for trailing dirents","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix the out-of-bounds nameoff handling for trailing dirents\n\nCurrently we already have boundary-checks for nameoffs, but the trailing\ndirents are special since the namelens are calculated with strnlen()\nwith unchecked nameoffs.\n\nIf a crafted EROFS has a trailing dirent with nameoff >= maxsize,\nmaxsize - nameoff can underflow, causing strnlen() to read past the\ndirectory block.\n\nnameoff0 should also be verified to be a multiple of\n`sizeof(struct erofs_dirent)` as well [1].\n\n[1] https://sashiko.dev/#/patchset/20260416063511.3173774-1-hsiangkao%40linux.alibaba.com","state":0,"publishedAt":"2026-05-27T12:58:11.916+00:00","modifiedAt":"2026-10-19T19:26:43.106+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/erofs/dir.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3aa8ec716e52c02360457fa018296629b4d0becf\",\n                            \"lessThan\": \"a8ee527807f7d97e55ce2ef2906f7f34975eb1c7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3aa8ec716e52c02360457fa018296629b4d0becf\",\n                            \"lessThan\": \"aa16dca1b062355181ef215229eeac249d7c0d61\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3aa8ec716e52c02360457fa018296629b4d0becf\",\n                            \"lessThan\": \"80a23c6d1aba35be8746d74ac14e6ba5ae46da21\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3aa8ec716e52c02360457fa018296629b4d0becf\",\n                            \"lessThan\": \"222055e6b4063abd2d9e13c3d49bbd1724c50789\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3aa8ec716e52c02360457fa018296629b4d0becf\",\n                            \"lessThan\": \"48b27a955d22391c7f30169fa7b6b2e1977f1ce4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3aa8ec716e52c02360457fa018296629b4d0becf\",\n                            \"lessThan\": \"8ebb951a284b7446e025afc7dc5e9516ef9a7214\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3aa8ec716e52c02360457fa018296629b4d0becf\",\n                            \"lessThan\": \"1d55445226c75ddd4e78b09b3e7d99109b28c366\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3aa8ec716e52c02360457fa018296629b4d0becf\",\n                            \"lessThan\": \"d18a3b5d337fa412a38e776e6b4b857a58836575\",\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/erofs/dir.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.259\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.210\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.175\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.140\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.86\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.27\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.4\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/a8ee527807f7d97e55ce2ef2906f7f34975eb1c7","https://git.kernel.org/stable/c/aa16dca1b062355181ef215229eeac249d7c0d61","https://git.kernel.org/stable/c/80a23c6d1aba35be8746d74ac14e6ba5ae46da21","https://git.kernel.org/stable/c/222055e6b4063abd2d9e13c3d49bbd1724c50789","https://git.kernel.org/stable/c/48b27a955d22391c7f30169fa7b6b2e1977f1ce4","https://git.kernel.org/stable/c/8ebb951a284b7446e025afc7dc5e9516ef9a7214","https://git.kernel.org/stable/c/1d55445226c75ddd4e78b09b3e7d99109b28c366","https://git.kernel.org/stable/c/d18a3b5d337fa412a38e776e6b4b857a58836575"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46078","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-46078","identifiers":["CVE-2026-46078"]},"retained":false,"historicalAffected":[]}],"coverage":[]}