CVE-2024-46672 wifi: brcmfmac: cfg80211: Handle SSID based pmksa deletion
A null pointer dereference in the brcmfmac Wi-Fi driver allows attackers to cause a denial of service via crafted SSID-based PMKSA deletion commands.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-46672?
CVE-2024-46672 is a medium-severity vulnerability in Linux kernel, published on 11 Sep 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
wifi: brcmfmac: cfg80211: Handle SSID based pmksa deletion
wpa_supplicant 2.11 sends since 1efdba5fdc2c ("Handle PMKSA flush in the driver for SAE/OWE offload cases") SSID based PMKSA del commands. brcmfmac is not prepared and tries to dereference the NULL bssid and pmkid pointers in cfg80211_pmksa. PMKID_V3 operations support SSID based updates so copy the SSID.
Weakness: CWE-476
Which versions are affected by CVE-2024-46672?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-46672?
Apply the vendor's patch.
Is CVE-2024-46672 being exploited?
There is no known exploitation of CVE-2024-46672 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-49257, BELL-CVE-2024-46672, DEBIAN-CVE-2024-46672, GHSA-56j2-rfmx-x6p8, UBUNTU-CVE-2024-46672.