CVE-2025-68235 nouveau/firmware: Add missing kfree() of nvkm_falcon_fw::boot
A memory leak in the Linux kernel nouveau driver 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-2025-68235?
CVE-2025-68235 is a memory corruption vulnerability in Linux, published on 16 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:
nouveau/firmware: Add missing kfree() of nvkm_falcon_fw::boot
nvkm_falcon_fw::boot is allocated, but no one frees it. This causes a kmemleak warning.
Make sure this data is deallocated.
Which versions are affected by CVE-2025-68235?
How do I fix CVE-2025-68235?
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-2025-68235 being exploited?
There is no known exploitation of CVE-2025-68235 in the wild and no public exploit code.
Sources
Also known as AZL-72460, BELL-CVE-2025-68235, DEBIAN-CVE-2025-68235, GHSA-phf7-78w6-7p26, ROOT-OS-DEBIAN-13-CVE-2025-68235, ROOT-OS-UBUNTU-2404-CVE-2025-68235 and 1 more.