CVE-2022-50355 staging: vt6655: fix some erroneous memory clean-up loops
A memory corruption vulnerability in the vt6655 driver allows attackers to cause a denial of service via invalid memory access during initialization failures.
- 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-2022-50355?
CVE-2022-50355 is a high-severity memory corruption vulnerability in Linux kernel, published on 17 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:
staging: vt6655: fix some erroneous memory clean-up loops
In some initialization functions of this driver, memory is allocated with 'i' acting as an index variable and increasing from 0. The commit in "Fixes" introduces some clean-up codes in case of allocation failure, which free memory in reverse order with 'i' decreasing to 0. However, there are some problems: - The case i=0 is left out. Thus memory is leaked. - In case memory allocation fails right from the start, the memory freeing loops will start with i=-1 and invalid memory locations will be accessed.
One of these loops has been fixed in commit c8ff91535880 ("staging: vt6655: fix potential memory leak"). Fix the remaining erroneous loops.
Weakness: CWE-401
Which versions are affected by CVE-2022-50355?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50355?
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-2022-50355 being exploited?
There is no known exploitation of CVE-2022-50355 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-50355, GHSA-r7xh-cr9c-6wxq, UBUNTU-CVE-2022-50355.