Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: validate assoc response length before status and IE access cfg80211_rx_assoc_resp() initialises the status and response-IE fields of cfg80211_connect_resp_params from the management frame before proving that the frame is long enough for those offsets. S1G and regular association responses also have different IE offsets, but the S1G path only patched resp_ie after the unsafe initialiser had already run. Defer resp_ie, resp_ie_len, and status to after the link-iteration loop. Use a bool to remember whether the frame is S1G, then validate the appropriate minimum length and set all three fields in a single if/else block. Funnel short-frame and SME-reject cleanup through a shared free_bss label for the abandon paths.
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/3bcaaaa4ad334053ceea2ea2f0623f22afe2e1ac
- https://git.kernel.org/stable/c/71be658246c903b9e96976a23c23800675896a1b
- https://git.kernel.org/stable/c/78ac450ad4624d6b2999cb4eeb28916767f81247
- https://git.kernel.org/stable/c/a57310600c1e2b9ada0f37c96e8f48aef47d3093
- https://git.kernel.org/stable/c/b760113aeca2e9362d56bf9e9263373ffe6c8eb3
FAQ
What is CVE-2026-93806?
CVE-2026-93806 is a vulnerability with a CVSS score of 8.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: validate assoc response length before status and IE access cfg80211_rx_assoc_resp() initialises the status and res...
How severe is CVE-2026-93806?
CVE-2026-93806 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-93806?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.