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CVE-2026-53149

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Bound root directory content to block size __tb_property_parse_dir() does not check that content_offset + content_…

Published Jun 25, 2026CWE-125EPSS 0.13%

Overview

CVE-2026-53149 is a high-severity vulnerability. It was published on June 25, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

thunderbolt: Bound root directory content to block size

__tb_property_parse_dir() does not check that content_offset +

content_len fits within block_len for the root directory case.

When rootdir->length equals or exceeds block_len - 2, the entry

loop reads past the allocated property block.

Add a bounds check after computing content_offset and content_len

to reject directories whose content extends past 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/0a32040a48db8cf35de48b85d6115df5623e4964Refgit.kernel.org/stable/c/1912be23daf4afc8d24ce916021ab68ca4c679dbRefgit.kernel.org/stable/c/4d0b1524caadb04c10a71f3f88692c63dcb39115Refgit.kernel.org/stable/c/5c7657d38d07268124782f03519f07c22a5814fbRefgit.kernel.org/stable/c/60ba6217460792356a238299edd675d91d46bab4Refgit.kernel.org/stable/c/65423079c7420e3dbf9a7aa345c243a3f5752e5dRefgit.kernel.org/stable/c/b212bc161d8a9937b42153723a4a3f2f74fab528Refgit.kernel.org/stable/c/cbeb68cbaa0a6f979ef428a7f2d0268c082ba166

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53149?

CVE-2026-53149 is a high-severity vulnerability. It was published on June 25, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-53149?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-53149?

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-2026-53149?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53149 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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