CVE-2022-50785 fsi: occ: Prevent use after free
A use-after-free vulnerability in the Linux kernel FSI OCC driver allows attackers to potentially execute code or escalate privileges.
- 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-2022-50785?
CVE-2022-50785 is a high-severity use after free vulnerability in Linux, published on 30 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:
fsi: occ: Prevent use after free
Use get_device and put_device in the open and close functions to make sure the device doesn't get freed while a file descriptor is open. Also, lock around the freeing of the device buffer and check the buffer before using it in the submit function.
Which versions are affected by CVE-2022-50785?
How do I fix CVE-2022-50785?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2022-50785 being exploited?
There is no known exploitation of CVE-2022-50785 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50785, GHSA-wv6p-qh73-f5xp, ROOT-OS-UBUNTU-2204-CVE-2022-50785, UBUNTU-CVE-2022-50785.