CVE-2022-50418 wifi: ath11k: mhi: fix potential memory leak in ath11k_mhi_register()
A memory leak in the ath11k WiFi driver allows attackers to cause a denial of service by triggering specific error conditions during device registration.
- 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-2022-50418?
CVE-2022-50418 is a medium-severity denial of service vulnerability in Linux kernel, published on 18 Sep 2025. 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: ath11k: mhi: fix potential memory leak in ath11k_mhi_register()
mhi_alloc_controller() allocates a memory space for mhi_ctrl. When gets some error, mhi_ctrl should be freed with mhi_free_controller(). But when ath11k_mhi_read_addr_from_dt() fails, the function returns without calling mhi_free_controller(), which will lead to a memory leak.
We can fix it by calling mhi_free_controller() when ath11k_mhi_read_addr_from_dt() fails.
Weakness: CWE-401
Which versions are affected by CVE-2022-50418?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50418?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-50418 being exploited?
There is no known exploitation of CVE-2022-50418 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-72316, DEBIAN-CVE-2022-50418, GHSA-pcpm-w6gc-fm98, ROOT-OS-DEBIAN-11-CVE-2022-50418, ROOT-OS-UBUNTU-2204-CVE-2022-50418, UBUNTU-CVE-2022-50418.