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Vulnerability Details CVE-2026-53369

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 3.7%
CVSS Severity
CVSS v3 Score 8.4
Products affected by CVE-2026-53369


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