CVE-2025-22073 spufs: fix a leak on spufs_new_file() failure
A memory leak in the Linux kernel's spufs filesystem can lead to resource exhaustion and denial of service.
- 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-2025-22073?
CVE-2025-22073 is a medium-severity memory corruption vulnerability in Linux kernel, published on 16 Apr 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:
spufs: fix a leak on spufs_new_file() failure
It's called from spufs_fill_dir(), and caller of that will do spufs_rmdir() in case of failure. That does remove everything we'd managed to create, but... the problem dentry is still negative. IOW, it needs to be explicitly dropped.
Weakness: CWE-401
Which versions are affected by CVE-2025-22073?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-22073?
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-2025-22073 being exploited?
There is no known exploitation of CVE-2025-22073 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-22073, DEBIAN-CVE-2025-22073, GHSA-92m7-rr4r-78cq, ROOT-OS-DEBIAN-11-CVE-2025-22073, ROOT-OS-UBUNTU-2404-CVE-2025-22073, UBUNTU-CVE-2025-22073.