{"id":"CVE-2026-53369","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nudf: reject descriptors with oversized CRC length\n\nudf_read_tagged() skips CRC verification when descCRCLength +\nsizeof(struct tag) exceeds the block size","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nudf: reject descriptors with oversized CRC length\n\nudf_read_tagged() skips CRC verification when descCRCLength +\nsizeof(struct tag) exceeds the block size.  A crafted U…","severity":"high","published":"2026-07-19","updated":"2026-07-19","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53369","references":[{"url":"https://git.kernel.org/stable/c/1873eb81c65d3f849418d7386baa39c439c9fc38","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/31605bbe94557bff721eaf041001169d44ac6f98","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3dede76d525919bb966f9213e131af685de5ff99","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/50dfaf4a027742b4fcdc3e9305e7199ece9bc6a6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/55d41b0a20128e86b9e960dd2e3f0a2d69a18df7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7d1b6adbf90df6c8941090d5646fbeca25ba9770","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/832ab4a882dc9b3c0155490d9993642ef545fd22","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fdb26e628d2a211a23815d375bd33bdf863344e2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.0019,"epssPercentile":0.0862,"ingestedAt":"2026-07-19T14:31:07.197Z","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 832ab4a882dc9b3c0155490d9993642ef545fd22","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7d1b6adbf90df6c8941090d5646fbeca25ba9770","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3dede76d525919bb966f9213e131af685de5ff99","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 50dfaf4a027742b4fcdc3e9305e7199ece9bc6a6","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 31605bbe94557bff721eaf041001169d44ac6f98","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1873eb81c65d3f849418d7386baa39c439c9fc38","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fdb26e628d2a211a23815d375bd33bdf863344e2","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 55d41b0a20128e86b9e960dd2e3f0a2d69a18df7","Linux 2.6.12"],"cvss":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:29:27.690676Z"},"cvssSource":"cna","slug":"CVE-2026-53369","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nudf: reject descriptors with oversized CRC length\n\nudf_read_tagged() skips CRC verification when descCRCLength +\nsizeof(struct tag) exceeds the block size.  A crafted UDF image can\nset descCRCLength to an oversized value to bypass CRC validation\nentirely; the descriptor is then accepted based solely on the 8-bit\ntag checksum, which is trivially recomputable.\n\nReject such descriptors instead of silently accepting them.  A\nlegitimate single-block descriptor should never have a CRC length that\nexceeds the block.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":223106,"id":"CVE-2026-53369","ts":1792172291684,"field":"cvss","old":null,"new":"8.4"},{"seq":223105,"id":"CVE-2026-53369","ts":1792172291684,"field":"severity","old":"none","new":"high"}]}