CVE-2024-47718 wifi: rtw88: always wait for both firmware loading attempts
A use-after-free vulnerability in the Linux kernel rtw88 WiFi driver allows attackers to cause denial of service or potentially execute code via race conditions during firmware loading.
- 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-2024-47718?
CVE-2024-47718 is a high-severity use after free vulnerability in Linux kernel, published on 21 Oct 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: rtw88: always wait for both firmware loading attempts
In 'rtw_wait_firmware_completion()', always wait for both (regular and wowlan) firmware loading attempts. Otherwise if 'rtw_usb_intf_init()' has failed in 'rtw_usb_probe()', 'rtw_usb_disconnect()' may issue 'ieee80211_free_hw()' when one of 'rtw_load_firmware_cb()' (usually the wowlan one) is still in progress, causing UAF detected by KASAN.
Weakness: CWE-416
Which versions are affected by CVE-2024-47718?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-47718?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2024-47718 being exploited?
There is no known exploitation of CVE-2024-47718 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-51138, AZL-51204, BELL-CVE-2024-47718, DEBIAN-CVE-2024-47718, GHSA-992g-jf7j-f3wc, UBUNTU-CVE-2024-47718.