CVE-2022-50245 rapidio: fix possible UAF when kfifo_alloc() fails
A use-after-free vulnerability in the Linux kernel RapidIO driver allows attackers to potentially execute code or escalate privileges when memory allocation fails.
- 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-2022-50245?
CVE-2022-50245 is a high-severity use after free vulnerability in Linux kernel, published on 15 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:
rapidio: fix possible UAF when kfifo_alloc() fails
If kfifo_alloc() fails in mport_cdev_open(), goto err_fifo and just free priv. But priv is still in the chdev->file_list, then list traversal may cause UAF. This fixes the following smatch warning:
drivers/rapidio/devices/rio_mport_cdev.c:1930 mport_cdev_open() warn: '&priv->list' not removed from list
Weakness: CWE-416
Which versions are affected by CVE-2022-50245?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50245?
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-2022-50245 being exploited?
There is no known exploitation of CVE-2022-50245 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-50245, GHSA-v4vx-qxh4-8ww4, UBUNTU-CVE-2022-50245.