CVE-2025-39679 drm/nouveau/nvif: Fix potential memory leak in nvif_vmm_ctor().
A memory leak in the Linux kernel's nouveau driver allows attackers to cause a denial of service by triggering an invalid memory management type.
- 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-2025-39679?
CVE-2025-39679 is a medium-severity denial of service vulnerability in Linux kernel, published on 5 Sep 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:
drm/nouveau/nvif: Fix potential memory leak in nvif_vmm_ctor().
When the nvif_vmm_type is invalid, we will return error directly without freeing the args in nvif_vmm_ctor(), which leading a memory leak. Fix it by setting the ret -EINVAL and goto done.
Weakness: CWE-401
Which versions are affected by CVE-2025-39679?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-39679?
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-2025-39679 being exploited?
There is no known exploitation of CVE-2025-39679 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-67031, BELL-CVE-2025-39679, DEBIAN-CVE-2025-39679, GHSA-x8p2-4p73-pr84, ROOT-OS-DEBIAN-13-CVE-2025-39679, ROOT-OS-UBUNTU-2404-CVE-2025-39679 and 1 more.