CVE-2026-90344
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: disconnect on CSA to channel 0 The refactor for the CSA parsing erroneously equates channel zero and no informa…
Overview
CVE-2026-90344 is a known-severity vulnerability. It was published on September 17, 2026.
Technical description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: disconnect on CSA to channel 0
The refactor for the CSA parsing erroneously equates channel
zero and no information present, leading it to ignore a CSA
on an AP that advertises a switch to that (invalid) channel.
This leads to not disconnecting, which we should. For Intel
devices, this can lead to a firmware crash.
Fix this by using an int type for the channel number as well
as the opclass, and using a (negative) value that cannot be
encoded in the element to indicate it's not 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.
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Frequently asked questions
What is CVE-2026-90344?
CVE-2026-90344 is a known-severity vulnerability. It was published on September 17, 2026.
How severe is CVE-2026-90344?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-90344?
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-2026-90344?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-90344 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.