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.

Classification

CVE ID: CVE-2024-43841

CVSS Base Severity: LOW

CVSS Base Score: 3.3

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.06% (probability of being exploited)

EPSS Percentile: 17.27% (scored less or equal to compared to others)

EPSS Date: 2025-06-02 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: none

SSVC Technical Impact: partial

SSVC Automatable: false

References

https://nvd.nist.gov/vuln/detail/CVE-2024-43841
https://git.kernel.org/stable/c/994fc2164a03200c3bf42fb45b3d49d9d6d33a4d
https://git.kernel.org/stable/c/05c4488a0e446c6ccde9f22b573950665e1cd414
https://git.kernel.org/stable/c/93e898a264b4e0a475552ba9f99a016eb43ef942
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

Timeline