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CVE-2026-23367

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: wifi: radiotap: reject radiotap with unknown bits The radiotap parser is currently only used with the radiotap namespace (not w…

Published Mar 25, 2026EPSS 0.13%

Overview

CVE-2026-23367 is a medium-severity vulnerability. It was published on March 25, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

wifi: radiotap: reject radiotap with unknown bits

The radiotap parser is currently only used with the radiotap

namespace (not with vendor namespaces), but if the undefined

field 18 is used, the alignment/size is unknown as well. In

this case, iterator->_next_ns_data isn't initialized (it's

only set for skipping vendor namespaces), and syzbot points

out that we later compare against this uninitialized value.

Fix this by moving the rejection of unknown radiotap fields

down to after the in-namespace lookup, so it will really use

iterator->_next_ns_data only for vendor namespaces, even in

case undefined fields are present.

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/129c8bb320a7cef692c78056ef8e89a2a12ba448Refgit.kernel.org/stable/c/2a60c588d5d39ad187628f58395c776a97fd4323Refgit.kernel.org/stable/c/2f8ceeba670610d66f77def32011f48de951d781Refgit.kernel.org/stable/c/6f80f6a60f5d87e5de5fb2732751fce799991c24Refgit.kernel.org/stable/c/703fa979badbba83d31cd011606d060bfb8b0d1dRefgit.kernel.org/stable/c/c854758abe0b8d86f9c43dc060ff56a0ee5b31e0Refgit.kernel.org/stable/c/d1d1d3c50095928624a95b67a6d7ccc3a18f2215Refgit.kernel.org/stable/c/e664971759a0e5570b50c6592e58a7f97d55e992

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23367?

CVE-2026-23367 is a medium-severity vulnerability. It was published on March 25, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-23367?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-23367?

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-2026-23367?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23367 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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