CVE-2024-42125: wifi: rtw89: fw: scan offload prohibit all 6 GHz channel if no 6 GHz sband

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-30 · updated 2026-06-17
Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: fw: scan offload prohibit all 6 GHz channel if no 6 GHz sband We have some policy via BIOS to block uses of 6 GHz. In this case, 6 GHz sband will be NULL even if it is WiFi 7 chip. So, add NULL handling here to avoid crash.

Affected products

Linux kernel: from 6.9 before 6.9.9 — fixed in 6.9.9

How to fix

Upgrade to a fixed version: Linux kernel 6.9.9. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/bb38626f3f97e16e6d368a9ff6daf320f3fe31d9
https://git.kernel.org/stable/c/ce4ba62f8bc5195a9a0d49c6235a9c99e619cadc
https://git.kernel.org/stable/c/bb38626f3f97e16e6d368a9ff6daf320f3fe31d9
https://git.kernel.org/stable/c/ce4ba62f8bc5195a9a0d49c6235a9c99e619cadc

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