CVE-2022-49144 io_uring: fix memory leak of uid in files registration
A memory leak in the Linux kernel's io_uring subsystem allows attackers to cause a denial of service by exhausting system memory.
- 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-2022-49144?
CVE-2022-49144 is a medium-severity denial of service vulnerability in Linux kernel, published on 26 Feb 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:
io_uring: fix memory leak of uid in files registration
When there are no files for __io_sqe_files_scm() to process in the range, it'll free everything and return. However, it forgets to put uid.
Weakness: CWE-401
Which versions are affected by CVE-2022-49144?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49144?
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-2022-49144 being exploited?
There is no known exploitation of CVE-2022-49144 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49144, GHSA-8f72-j8x6-xm9m, UBUNTU-CVE-2022-49144.