CVE-2022-50465 ext4: fix leaking uninitialized memory in fast-commit journal
An attacker with local access can read uninitialized kernel memory from the ext4 fast-commit journal, potentially exposing sensitive data.
- 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-2022-50465?
CVE-2022-50465 is a medium-severity vulnerability in Linux kernel, published on 1 Oct 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:
ext4: fix leaking uninitialized memory in fast-commit journal
When space at the end of fast-commit journal blocks is unused, make sure to zero it out so that uninitialized memory is not leaked to disk.
Weakness: CWE-401
Which versions are affected by CVE-2022-50465?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50465?
Apply the vendor's patch.
Is CVE-2022-50465 being exploited?
There is no known exploitation of CVE-2022-50465 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-50465, GHSA-wcfx-jchh-3334, UBUNTU-CVE-2022-50465.