Status: UPDATED | Advisory ID: CVE-2026-93806
| CVE | CVE-2026-93806 |
| CVSS Score / Version | 8.8 (High) / CVSS v3.1 |
| Updated | 2026-09-25 |
| CVSS Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CVSS Prose | attack vector is adjacent; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high. |
| Affected products | Linux Linux |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| Linux | Linux |
| Subsystems | General OT |
| Sectors | Multiple |
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. (NVD)
Monitor Linux's web page for any future patch releases.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-93806 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-93806 |