CVE-2026-90382
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt76x02: do not WARN on invalid rx descriptor length The MPDU length in the rx descriptor comes from the hardware.
Overview
CVE-2026-90382 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: mt76: mt76x02: do not WARN on invalid rx descriptor length
The MPDU length in the rx descriptor comes from the hardware. In
monitor mode with the fcsfail filter enabled, the hardware passes up
corrupted frames, and a corrupted frame can report a length larger
than the received buffer. The bounds check correctly discards such
frames, but its WARN_ON_ONCE wrapper means any over-the-air garbage
frame taints the kernel, and panics it on the first such frame when
panic_on_warn is set.
Drop the WARN and discard the frame silently, matching what
commit c2d4c8723dbf ("mt76x2: remove some harmless WARN_ONs in tx
status and rx path") did for the neighboring rx and tx status paths.
Observed immediately on rx with an MT7612U in fcsfail monitor mode
on a busy channel.
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
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Frequently asked questions
What is CVE-2026-90382?
CVE-2026-90382 is a known-severity vulnerability. It was published on September 17, 2026.
How severe is CVE-2026-90382?
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-2026-90382?
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-2026-90382?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-90382 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.