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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-azure | < any | UNKNOWN |
git.kernel.org/linus/b5d14b0c6716fad7f0c94ac6e1d6f60a49f985c7 (6.11-rc1)
git.kernel.org/stable/c/05c4488a0e446c6ccde9f22b573950665e1cd414
git.kernel.org/stable/c/36e92b5edc8e0daa18e9325674313802ce3fbc29
git.kernel.org/stable/c/416d3c1538df005195721a200b0371d39636e05d
git.kernel.org/stable/c/93e898a264b4e0a475552ba9f99a016eb43ef942
git.kernel.org/stable/c/994fc2164a03200c3bf42fb45b3d49d9d6d33a4d
git.kernel.org/stable/c/b5d14b0c6716fad7f0c94ac6e1d6f60a49f985c7
git.kernel.org/stable/c/d3cc85a10abc8eae48988336cdd3689ab92581b3
launchpad.net/bugs/cve/CVE-2024-43841
nvd.nist.gov/vuln/detail/CVE-2024-43841
security-tracker.debian.org/tracker/CVE-2024-43841
www.cve.org/CVERecord?id=CVE-2024-43841