CVE-2022-50247 usb: xhci-mtk: fix leakage of shared hcd when fail to set wakeup irq
A memory leak in the Linux kernel's xhci-mtk driver can lead to resource exhaustion and denial of service when setting wakeup IRQs fails.
- 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-2022-50247?
CVE-2022-50247 is a medium-severity denial of service vulnerability in Linux kernel, published on 15 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:
usb: xhci-mtk: fix leakage of shared hcd when fail to set wakeup irq
Can not set the @shared_hcd to NULL before decrease the usage count by usb_put_hcd(), this will cause the shared hcd not released.
Weakness: CWE-401
Which versions are affected by CVE-2022-50247?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50247?
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-2022-50247 being exploited?
There is no known exploitation of CVE-2022-50247 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-50247, GHSA-3p27-9p9g-q639, UBUNTU-CVE-2022-50247.