Linux Kernel cfg80211 cfg80211_wext_siwgenie out-of-bounds

Summaryinfo

A vulnerability categorized as very critical has been discovered in Linux Kernel. Affected by this issue is the function cfg80211_wext_siwgenie of the component cfg80211. Such manipulation leads to out-of-bounds. This vulnerability is listed as CVE-2026-93784. The attack must be carried out locally. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Linux Kernel (affected version unknown). Affected by this issue is the function cfg80211_wext_siwgenie of the component cfg80211. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

This vulnerability is handled as CVE-2026-93784. The exploitation is known to be easy. Local access is required to approach this attack. Additional levels of successful authentication are necessary for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/24/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

License

• open-source

Website

• Vendor: https://www.kernel.org/

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