Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: reject VHT opmode for unsupported channel widths VHT operating mode notifications are not defined for channel widths below 20 MHz. In particular, 5 MHz and 10 MHz are not valid under the VHT specification and must be rejected. Without this check, malformed notifications using these widths may reach ieee80211_chan_width_to_rx_bw(), leading to a WARN_ON due to invalid input. This issue was reported by syzbot. Reject these unsupported widths early in sta_link_apply_parameters() when opmode_notif is used. The accepted set includes 20, 40, 80, 160, and 80+80 MHz, which are valid for VHT. While 320 MHz is not defined for VHT, it is allowed to avoid rejecting HE or EHT clients that may still send a VHT opmode notification.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 751e7489c1d74b94ffffbed619d8fd724eeff4ee before 18eca59a04500b68a90e0c5c873f97c9d1ea2bfa; affected 751e7489c1d74b94ffffbed619d8fd724eeff4ee before 58fcb1b4287ce38850402bb2bb16d09bf77b91d9 |
| Linux / Linux | affected 6.13; unaffected 0 before 6.13; unaffected 6.15.7 through 6.15.*; unaffected 6.16 through * |
CWE
No CWE identifiers supplied.