CVE-2026-53369udf: reject descriptors with oversized CRC length
- 8.4HighCVSS base score
- 0.19%Exploitation in 30 daysEPSS · top 91% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 40 days later
· 40 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.19% · top 91% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.4.
Affected products
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 832ab4a882dc9b3c0155490d9993642ef545fd22
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 7d1b6adbf90df6c8941090d5646fbeca25ba9770
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 3dede76d525919bb966f9213e131af685de5ff99
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 50dfaf4a027742b4fcdc3e9305e7199ece9bc6a6
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 31605bbe94557bff721eaf041001169d44ac6f98
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 1873eb81c65d3f849418d7386baa39c439c9fc38
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < fdb26e628d2a211a23815d375bd33bdf863344e2
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 55d41b0a20128e86b9e960dd2e3f0a2d69a18df7
- affected 2.6.12
- unaffected < 2.6.12
- unaffected 5.10.258 – ≤ 5.10.*
- unaffected 5.15.209 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.88 – ≤ 6.12.*
- unaffected 6.18.30 – ≤ 6.18.*
- unaffected 7.0.7 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References8
- https://git.kernel.org/stable/c/832ab4a882dc9b3c0155490d9993642ef545fd22 (opens in a new tab)
- https://git.kernel.org/stable/c/7d1b6adbf90df6c8941090d5646fbeca25ba9770 (opens in a new tab)
- https://git.kernel.org/stable/c/3dede76d525919bb966f9213e131af685de5ff99 (opens in a new tab)
- https://git.kernel.org/stable/c/50dfaf4a027742b4fcdc3e9305e7199ece9bc6a6 (opens in a new tab)
- https://git.kernel.org/stable/c/31605bbe94557bff721eaf041001169d44ac6f98 (opens in a new tab)
- https://git.kernel.org/stable/c/1873eb81c65d3f849418d7386baa39c439c9fc38 (opens in a new tab)
- https://git.kernel.org/stable/c/fdb26e628d2a211a23815d375bd33bdf863344e2 (opens in a new tab)
- https://git.kernel.org/stable/c/55d41b0a20128e86b9e960dd2e3f0a2d69a18df7 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-45439 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-53369)Record last updated .