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CVE-2026-53147

8.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Validate XDomain request packet size before type cast tb_xdp_handle_request() casts the received packet buffer to…

Published Jun 25, 2026CWE-125EPSS 0.27%

Overview

CVE-2026-53147 is a high-severity vulnerability. It was published on June 25, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, 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:

thunderbolt: Validate XDomain request packet size before type cast

tb_xdp_handle_request() casts the received packet buffer to

protocol-specific structs without verifying that the allocation

is large enough for the target type. A peer can send a minimal

XDomain packet that passes the generic header length check but is

shorter than the struct accessed after the cast, causing out-of-

bounds reads from the kmemdup allocation.

Plumb the packet length through xdomain_request_work and validate

it against the expected struct size before each cast.

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/07cd2787cdf8942d24a1a3ef81aa89b526fb6381Refgit.kernel.org/stable/c/0dd61ba03d05187726ecdf9c0e2175a81b9b24f6Refgit.kernel.org/stable/c/46da5c3ea011e884028a91cf913db093920a915bRefgit.kernel.org/stable/c/79235c8add5da4bf27a12f5a5dbb579f300c059eRefgit.kernel.org/stable/c/a504b9f2797b739e0304d537e8aa4ce883ecce39Refgit.kernel.org/stable/c/a770e62923090d7572f1f5a8507ae551d354a057

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53147?

CVE-2026-53147 is a high-severity vulnerability. It was published on June 25, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-53147?

This vulnerability has a CVSS 3.1 base score of 8.1, 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-2026-53147?

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-2026-53147?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53147 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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