wifi: virt_wifi: avoid reporting connection success with wrong SSID
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.0
References 7
git.kernel.org
- stable/c/994fc2164a03200c3bf42fb45b3d49d9d6d33a4d
- stable/c/05c4488a0e446c6ccde9f22b573950665e1cd414
- stable/c/93e898a264b4e0a475552ba9f99a016eb43ef942
- stable/c/d3cc85a10abc8eae48988336cdd3689ab92581b3
- stable/c/36e92b5edc8e0daa18e9325674313802ce3fbc29
- stable/c/416d3c1538df005195721a200b0371d39636e05d
- stable/c/b5d14b0c6716fad7f0c94ac6e1d6f60a49f985c7