CVE-2024-47721 wifi: rtw89: remove unused C2H event ID RTW89_MAC_C2H_FUNC_READ_WOW_CAM to prevent out-of-bounds reading
An out-of-bounds read in the rtw89 WiFi driver allows attackers to disclose memory or cause a system crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-47721?
CVE-2024-47721 is a high-severity memory corruption 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: rtw89: remove unused C2H event ID RTW89_MAC_C2H_FUNC_READ_WOW_CAM to prevent out-of-bounds reading
The handler of firmware C2H event RTW89_MAC_C2H_FUNC_READ_WOW_CAM isn't implemented, but driver expects number of handlers is NUM_OF_RTW89_MAC_C2H_FUNC_WOW causing out-of-bounds access. Fix it by removing ID.
Addresses-Coverity-ID: 1598775 ("Out-of-bounds read")
Weakness: CWE-125
Which versions are affected by CVE-2024-47721?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-47721?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2024-47721 being exploited?
There is no known exploitation of CVE-2024-47721 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-47721, DEBIAN-CVE-2024-47721, GHSA-x8c3-73fg-wc6p, UBUNTU-CVE-2024-47721.