CVE-2022-50761 x86/xen: Fix memory leak in xen_init_lock_cpu()
A memory leak in the Linux kernel's Xen initialization can lead to resource exhaustion and denial of service.
- 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-2022-50761?
CVE-2022-50761 is a denial of service vulnerability in Linux, published on 24 Dec 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:
x86/xen: Fix memory leak in xen_init_lock_cpu()
In xen_init_lock_cpu(), the @name has allocated new string by kasprintf(), if bind_ipi_to_irqhandler() fails, it should be freed, otherwise may lead to a memory leak issue, fix it.
Which versions are affected by CVE-2022-50761?
How do I fix CVE-2022-50761?
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-2022-50761 being exploited?
There is no known exploitation of CVE-2022-50761 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50761, GHSA-9498-f72m-xmv4, UBUNTU-CVE-2022-50761.