CVE-2022-50758 staging: vt6655: fix potential memory leak
A memory leak in the vt6655 staging 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-2022-50758?
CVE-2022-50758 is a high-severity 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:
staging: vt6655: fix potential memory leak
In function device_init_td0_ring, memory is allocated for member td_info of priv->apTD0Rings[i], with i increasing from 0. In case of allocation failure, the memory is freed in reversed order, with i decreasing to 0. However, the case i=0 is left out and thus memory is leaked.
Modify the memory freeing loop to include the case i=0.
Which versions are affected by CVE-2022-50758?
How do I fix CVE-2022-50758?
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-2022-50758 being exploited?
There is no known exploitation of CVE-2022-50758 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50758, GHSA-35g5-mqjg-qfr4, UBUNTU-CVE-2022-50758.