CVEvulnerability
CVE-2026-93806
8.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-09-24
- Last modified
- 2026-10-03
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 8.8 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
References
- https://git.kernel.org/stable/c/3bcaaaa4ad334053ceea2ea2f0623f22afe2e1ac git.kernel.org
- https://git.kernel.org/stable/c/71be658246c903b9e96976a23c23800675896a1b git.kernel.org
- https://git.kernel.org/stable/c/78ac450ad4624d6b2999cb4eeb28916767f81247 git.kernel.org
- https://git.kernel.org/stable/c/a57310600c1e2b9ada0f37c96e8f48aef47d3093 git.kernel.org
- https://git.kernel.org/stable/c/b760113aeca2e9362d56bf9e9263373ffe6c8eb3 git.kernel.org