CVE-2024-49928 wifi: rtw89: avoid reading out of bounds when loading TX power FW elements
A local attacker can trigger an out-of-bounds read in the rtw89 WiFi driver, potentially causing a system crash or leaking kernel memory.
- 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-2024-49928?
CVE-2024-49928 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: avoid reading out of bounds when loading TX power FW elements
Because the loop-expression will do one more time before getting false from cond-expression, the original code copied one more entry size beyond valid region.
Fix it by moving the entry copy to loop-body.
Weakness: CWE-125
Which versions are affected by CVE-2024-49928?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-49928?
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-2024-49928 being exploited?
There is no known exploitation of CVE-2024-49928 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-49928, DEBIAN-CVE-2024-49928, GHSA-8w32-7xxp-mvxc, ROOT-OS-DEBIAN-12-CVE-2024-49928, ROOT-OS-UBUNTU-2204-CVE-2024-49928, UBUNTU-CVE-2024-49928.