{"id":"CVE-2026-72198","title":"ntfs: reject non-resident records for resident-only attributes","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: reject non-resident records for resident-only attributes\n\nThe shared lookup-time attribute validator rejects non-resident\n$FILE_NAME and $VOLUME_NAME records beca…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6626fb859f4c4772f2f59751d23937716e03f98f","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89","Linux >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < b54c9beb90e570bae17a9c18442aeeaf17165ccb","Linux >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < 097cdfd0a55df5af82c9753833f39a8bfadbcfcb","Linux 2.6.12","Linux 7.1"],"published":"2026-08-15","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:44:26.300Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72198","references":[{"url":"https://git.kernel.org/stable/c/6626fb859f4c4772f2f59751d23937716e03f98f"},{"url":"https://git.kernel.org/stable/c/7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89"},{"url":"https://git.kernel.org/stable/c/b54c9beb90e570bae17a9c18442aeeaf17165ccb"},{"url":"https://git.kernel.org/stable/c/097cdfd0a55df5af82c9753833f39a8bfadbcfcb"}],"tags":["cve.org"],"epss":0.00173,"epssPercentile":0.06375,"ingestedAt":"2026-10-21T12:48:53.594Z","slug":"CVE-2026-72198","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nntfs: reject non-resident records for resident-only attributes\n\nThe shared lookup-time attribute validator rejects non-resident\n$FILE_NAME and $VOLUME_NAME records because their formats require\nresident values and callers handle returned records as resident\nattributes. Other resident-only attribute types still pass through the\ngeneric non-resident mapping-pairs checks.\n\nThat leaves real resident/non-resident union confusion paths. Inode load\nlooks up $STANDARD_INFORMATION and then reads data.resident.value_offset\nwithout checking a->non_resident. ntfs_inode_sync_standard_information()\ndoes the same when updating the standard information value.\nntfs_write_volume_flags() also looks up $VOLUME_INFORMATION and reads\ndata.resident.value_offset directly. $INDEX_ROOT callers in dir.c and\nindex.c depend on the same lookup contract before consuming the resident\nindex root value.\n\nReject non-resident records for all resident-only attribute types in the\nshared validator. Keep the existing $FILE_NAME and $VOLUME_NAME behavior,\nbut factor it through a helper and extend it to\n$STANDARD_INFORMATION, $OBJECT_ID, $VOLUME_INFORMATION, $INDEX_ROOT, and\n$EA_INFORMATION. For $OBJECT_ID and $EA_INFORMATION this is contract\nhardening for resident-only formats; this patch only rejects the\nnon-resident form and does not add new resident value validation for\nthose types.\n\n## Affected\n\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6626fb859f4c4772f2f59751d23937716e03f98f`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89`\n- `Linux >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < b54c9beb90e570bae17a9c18442aeeaf17165ccb`\n- `Linux >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < 097cdfd0a55df5af82c9753833f39a8bfadbcfcb`\n- `Linux 2.6.12`\n- `Linux 7.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}