Vulnerability CVE-2024-43841
Published: 2024-08-17

Description:
In the Linux kernel, the following vulnerability has been resolved:

wifi: virt_wifi: avoid reporting connection success with wrong SSID

When user issues a connection with a different SSID than the one
virt_wifi has advertised, the __cfg80211_connect_result() will
trigger the warning: WARN_ON(bss_not_found).

The issue is because the connection code in virt_wifi does not
check the SSID from user space (it only checks the BSSID), and
virt_wifi will call cfg80211_connect_result() with WLAN_STATUS_SUCCESS
even if the SSID is different from the one virt_wifi has advertised.
Eventually cfg80211 won't be able to find the cfg80211_bss and generate
the warning.

Fixed it by checking the SSID (from user space) in the connection code.

 References:
https://git.kernel.org/stable/c/d3cc85a10abc8eae48988336cdd3689ab92581b3
https://git.kernel.org/stable/c/36e92b5edc8e0daa18e9325674313802ce3fbc29
https://git.kernel.org/stable/c/416d3c1538df005195721a200b0371d39636e05d
https://git.kernel.org/stable/c/b5d14b0c6716fad7f0c94ac6e1d6f60a49f985c7
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