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CVE-2026-53369

8.4 · HIGH

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 t…

Published Jul 19, 2026EPSS 0.15%

Overview

CVE-2026-53369 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/1873eb81c65d3f849418d7386baa39c439c9fc38Refgit.kernel.org/stable/c/31605bbe94557bff721eaf041001169d44ac6f98Refgit.kernel.org/stable/c/3dede76d525919bb966f9213e131af685de5ff99Refgit.kernel.org/stable/c/50dfaf4a027742b4fcdc3e9305e7199ece9bc6a6Refgit.kernel.org/stable/c/55d41b0a20128e86b9e960dd2e3f0a2d69a18df7Refgit.kernel.org/stable/c/7d1b6adbf90df6c8941090d5646fbeca25ba9770Refgit.kernel.org/stable/c/832ab4a882dc9b3c0155490d9993642ef545fd22Refgit.kernel.org/stable/c/fdb26e628d2a211a23815d375bd33bdf863344e2

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53369?

CVE-2026-53369 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-53369?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-53369?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-53369?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53369 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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