CVE-2024-43847 wifi: ath12k: fix invalid memory access while processing fragmented packets
Invalid memory access in the ath12k WiFi driver during fragmented packet processing can cause system crashes or potential code execution.
- 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-2024-43847?
CVE-2024-43847 is a high-severity memory corruption vulnerability in Linux kernel, published on 17 Aug 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: ath12k: fix invalid memory access while processing fragmented packets
The monitor ring and the reo reinject ring share the same ring mask index. When the driver receives an interrupt for the reo reinject ring, the monitor ring is also processed, leading to invalid memory access. Since monitor support is not yet enabled in ath12k, the ring mask for the monitor ring should be removed.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1
Which versions are affected by CVE-2024-43847?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-43847?
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-2024-43847 being exploited?
There is no known exploitation of CVE-2024-43847 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-43847, DEBIAN-CVE-2024-43847, GHSA-x8hg-ghpc-gxw6, UBUNTU-CVE-2024-43847.