CVE-2026-53369udf: reject descriptors with oversized CRC length
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 832ab4a882dc9b3c0155490d9993642ef545fd22; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 7d1b6adbf90df6c8941090d5646fbeca25ba9770; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3dede76d525919bb966f9213e131af685de5ff99; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 50dfaf4a027742b4fcdc3e9305e7199ece9bc6a6; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 31605bbe94557bff721eaf041001169d44ac6f98; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 1873eb81c65d3f849418d7386baa39c439c9fc38; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before fdb26e628d2a211a23815d375bd33bdf863344e2; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 55d41b0a20128e86b9e960dd2e3f0a2d69a18df7 | CNA record |
linux linux_kernel linux:linux_kernel | from 2.6.12.1 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.88; from 6.13 before 6.18.30; from 6.19 before 7.0.7; 2.6.12; and 5 more ranges | NVD |
References
- https://git.kernel.org/stable/c/832ab4a882dc9b3c0155490d9993642ef545fd22patch
- https://git.kernel.org/stable/c/7d1b6adbf90df6c8941090d5646fbeca25ba9770patch
- https://git.kernel.org/stable/c/3dede76d525919bb966f9213e131af685de5ff99patch
- https://git.kernel.org/stable/c/50dfaf4a027742b4fcdc3e9305e7199ece9bc6a6patch
- https://git.kernel.org/stable/c/31605bbe94557bff721eaf041001169d44ac6f98patch
- https://git.kernel.org/stable/c/1873eb81c65d3f849418d7386baa39c439c9fc38patch
- https://git.kernel.org/stable/c/fdb26e628d2a211a23815d375bd33bdf863344e2patch
- https://git.kernel.org/stable/c/55d41b0a20128e86b9e960dd2e3f0a2d69a18df7patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.