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Vulnerability record · CVE-2024-43841 · published 17 August 2024

CVE-2024-43841: Linux kernel vulnerability

Linux · Linux Kernel

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.

3.3 CVSS 3.1 Low EPSS 0.21% · top 89.8%
3.3CVSS 3.1 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
9References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/05c4488a0e446c6ccde9f22b573950665e1cd414 Patch
https://git.kernel.org/stable/c/36e92b5edc8e0daa18e9325674313802ce3fbc29 Patch
https://git.kernel.org/stable/c/416d3c1538df005195721a200b0371d39636e05d Patch
https://git.kernel.org/stable/c/93e898a264b4e0a475552ba9f99a016eb43ef942 Patch
https://git.kernel.org/stable/c/994fc2164a03200c3bf42fb45b3d49d9d6d33a4d Patch
https://git.kernel.org/stable/c/b5d14b0c6716fad7f0c94ac6e1d6f60a49f985c7 Patch
https://git.kernel.org/stable/c/d3cc85a10abc8eae48988336cdd3689ab92581b3 Patch
https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

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Source: NIST National Vulnerability Database (record CVE-2024-43841), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.