{"id":"CVE-2026-72160","revision":"19a014d6832e40dca7b0fd45e5d98cc7","records":[{"revision":"19a014d6832e40dca7b0fd45e5d98cc7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72160","aliases":[],"title":"ocfs2: reject dinodes with non-canonical i_mode type","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: reject dinodes with non-canonical i_mode type\n\nPatch series \"ocfs2: harden inode validators against forged metadata\", v2.\n\nThis series adds three structural checks to OCFS2 dinode validation so\nmalformed on-disk fields are rejected before ocfs2_populate_inode() copies\nthem into the in-core inode.\n\nThe checks cover:\n\n  - i_mode values whose type bits do not name a canonical POSIX file\n    type;\n  - non-device dinodes whose id1.dev1.i_rdev field is non-zero; and\n  - non-inline dinodes that claim non-zero i_size while i_clusters is\n    zero, covering directories unconditionally and regular files on\n    non-sparse volumes.\n\nThe normal read path reports these through ocfs2_error(), matching the\nexisting suballoc-slot, inline-data, chain-list, and refcount checks.  The\nonline filecheck path uses the same structural predicates but keeps its\nown reporting contract, returning OCFS2_FILECHECK_ERR_INVALIDINO instead\nof calling ocfs2_error().\n\n\nThis patch (of 3):\n\nocfs2_validate_inode_block() currently accepts any non-zero i_mode value. \nocfs2_populate_inode() then copies that mode verbatim into inode->i_mode\nand dispatches on i_mode & S_IFMT to the file/dir/symlink/special_file\niops; an unrecognised type falls through to ocfs2_special_file_iops and\ninit_special_inode().\n\nReject dinodes whose type bits do not name one of the seven canonical\nPOSIX file types.  Use fs_umode_to_ftype(), the same generic file-type\nconversion helper OCFS2 already uses for directory entries, so the\naccepted inode type set matches the kernel file-type vocabulary instead of\nopen-coding a local switch.\n\nApply the same structural check to the online filecheck read path. \nfilecheck keeps its own error namespace, so it reports malformed i_mode\nthrough the filecheck logger and OCFS2_FILECHECK_ERR_INVALIDINO instead of\ncalling ocfs2_error(), but it must not allow a malformed dinode to proceed\ninto ocfs2_populate_inode().","state":0,"publishedAt":"2026-08-15T05:53:28.943+00:00","modifiedAt":"2026-10-16T18:44:59.633+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/ocfs2/inode.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"b657c95c11088d77fc1bfc9c84d940f778bf9d12\",\n                            \"lessThan\": \"2e3aac33988ef4e4170141db8e995693ea38357c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b657c95c11088d77fc1bfc9c84d940f778bf9d12\",\n                            \"lessThan\": \"fb024ea29f6cb1f01745e5f2e31646f3acb9aa6f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b657c95c11088d77fc1bfc9c84d940f778bf9d12\",\n                            \"lessThan\": \"157d31ef45038d89cd19620105e082d43c8e41e0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b657c95c11088d77fc1bfc9c84d940f778bf9d12\",\n                            \"lessThan\": \"a5b555bcabbb0aff8745ad181768eaf9d964c1ee\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b657c95c11088d77fc1bfc9c84d940f778bf9d12\",\n                            \"lessThan\": \"82afe13558354390d8a592a5334d5f4fd72c0e5c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b657c95c11088d77fc1bfc9c84d940f778bf9d12\",\n                            \"lessThan\": \"4db3b6a2a8ecf2a89d26a4090ace4072c6fad050\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b657c95c11088d77fc1bfc9c84d940f778bf9d12\",\n                            \"lessThan\": \"b858f2d57cfc9d57ce61b86051d603dc0ebccd40\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b657c95c11088d77fc1bfc9c84d940f778bf9d12\",\n                            \"lessThan\": \"5366a017099c6a3c443be908a05f26fd72af12a1\",\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/ocfs2/inode.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.29\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.29\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.261\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.212\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.178\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.145\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.97\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.40\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/2e3aac33988ef4e4170141db8e995693ea38357c","https://git.kernel.org/stable/c/fb024ea29f6cb1f01745e5f2e31646f3acb9aa6f","https://git.kernel.org/stable/c/157d31ef45038d89cd19620105e082d43c8e41e0","https://git.kernel.org/stable/c/a5b555bcabbb0aff8745ad181768eaf9d964c1ee","https://git.kernel.org/stable/c/82afe13558354390d8a592a5334d5f4fd72c0e5c","https://git.kernel.org/stable/c/4db3b6a2a8ecf2a89d26a4090ace4072c6fad050","https://git.kernel.org/stable/c/b858f2d57cfc9d57ce61b86051d603dc0ebccd40","https://git.kernel.org/stable/c/5366a017099c6a3c443be908a05f26fd72af12a1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72160","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72160","identifiers":["CVE-2026-72160"]},"retained":false,"historicalAffected":[]}],"coverage":[]}