CVE-2026-53369 | BDVDB-2026-349451 Detail
LinuxLinux
Description#
In the Linux kernel, the following vulnerability has been resolved: udf: reject descriptors with oversized CRC length udf_read_tagged() skips CRC verification when descCRCLength + sizeof(struct tag) exceeds the block size. A crafted UDF image can set descCRCLength to an oversized value to bypass CRC validation entirely; the descriptor is then accepted based solely on the 8-bit tag checksum, which is trivially recomputable. Reject such descriptors instead of silently accepting them. A legitimate single-block descriptor should never have a CRC length that exceeds the block.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.
Weaknesses#
- CWE-20 Improper Input Validation
References#
- https://git.kernel.org/stable/c/832ab4a882dc9b3c0155490d9993642ef545fd22
- https://git.kernel.org/stable/c/7d1b6adbf90df6c8941090d5646fbeca25ba9770
- https://git.kernel.org/stable/c/3dede76d525919bb966f9213e131af685de5ff99
- https://git.kernel.org/stable/c/50dfaf4a027742b4fcdc3e9305e7199ece9bc6a6
- https://git.kernel.org/stable/c/31605bbe94557bff721eaf041001169d44ac6f98
- https://git.kernel.org/stable/c/1873eb81c65d3f849418d7386baa39c439c9fc38
- https://git.kernel.org/stable/c/fdb26e628d2a211a23815d375bd33bdf863344e2
- https://git.kernel.org/stable/c/55d41b0a20128e86b9e960dd2e3f0a2d69a18df7
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.