CVE-2022-49874 HID: hyperv: fix possible memory leak in mousevsc_probe()
A memory leak in the Linux kernel's Hyper-V HID driver can lead to resource exhaustion and denial of service.
- 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-2022-49874?
CVE-2022-49874 is a medium-severity memory corruption vulnerability in Linux kernel, published on 1 May 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:
HID: hyperv: fix possible memory leak in mousevsc_probe()
If hid_add_device() returns error, it should call hid_destroy_device() to free hid_dev which is allocated in hid_allocate_device().
Weakness: CWE-401
Which versions are affected by CVE-2022-49874?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49874?
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-2022-49874 being exploited?
There is no known exploitation of CVE-2022-49874 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49874, GHSA-5q7j-4fw2-f268, UBUNTU-CVE-2022-49874.