CVE-2022-50748 ipc: mqueue: fix possible memory leak in init_mqueue_fs()
A memory leak in the Linux kernel's mqueue initialization can lead to resource exhaustion and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-50748?
CVE-2022-50748 is a memory corruption 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:
ipc: mqueue: fix possible memory leak in init_mqueue_fs()
commit db7cfc380900 ("ipc: Free mq_sysctls if ipc namespace creation failed")
Here's a similar memory leak to the one fixed by the patch above. retire_mq_sysctls need to be called when init_mqueue_fs fails after setup_mq_sysctls.
Which versions are affected by CVE-2022-50748?
How do I fix CVE-2022-50748?
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-2022-50748 being exploited?
There is no known exploitation of CVE-2022-50748 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50748, GHSA-28q7-rjgm-6w8f, ROOT-OS-UBUNTU-2204-CVE-2022-50748, UBUNTU-CVE-2022-50748.