CVE-2026-53369
udf: reject descriptors with oversized CRC length
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 19, 2026 |
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Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 832ab4a882dc9b3c0155490d9993642ef545fd22 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7d1b6adbf90df6c8941090d5646fbeca25ba9770 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3dede76d525919bb966f9213e131af685de5ff99 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 50dfaf4a027742b4fcdc3e9305e7199ece9bc6a6 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 31605bbe94557bff721eaf041001169d44ac6f98 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1873eb81c65d3f849418d7386baa39c439c9fc38 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fdb26e628d2a211a23815d375bd33bdf863344e2 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 55d41b0a20128e86b9e960dd2e3f0a2d69a18df7
Linux / Linux
2.6.12
References
git.kernel.org: https://git.kernel.org/stable/c/832ab4a882dc9b3c0155490d9993642ef545fd22 git.kernel.org: https://git.kernel.org/stable/c/7d1b6adbf90df6c8941090d5646fbeca25ba9770 git.kernel.org: https://git.kernel.org/stable/c/3dede76d525919bb966f9213e131af685de5ff99 git.kernel.org: https://git.kernel.org/stable/c/50dfaf4a027742b4fcdc3e9305e7199ece9bc6a6 git.kernel.org: https://git.kernel.org/stable/c/31605bbe94557bff721eaf041001169d44ac6f98 git.kernel.org: https://git.kernel.org/stable/c/1873eb81c65d3f849418d7386baa39c439c9fc38 git.kernel.org: https://git.kernel.org/stable/c/fdb26e628d2a211a23815d375bd33bdf863344e2 git.kernel.org: https://git.kernel.org/stable/c/55d41b0a20128e86b9e960dd2e3f0a2d69a18df7