CVE-2024-35786 drm/nouveau: fix stale locked mutex in nouveau_gem_ioctl_pushbuf

Medium 5.5 Published Updated

A stale mutex lock in the nouveau driver causes a deadlock when legacy submission is attempted with VM_BIND enabled, leading to 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-2024-35786?

CVE-2024-35786 is a medium-severity vulnerability in Linux kernel, published on 17 May 2024. 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: fix stale locked mutex in nouveau_gem_ioctl_pushbuf

If VM_BIND is enabled on the client the legacy submission ioctl can't be used, however if a client tries to do so regardless it will return an error. In this case the clients mutex remained unlocked leading to a deadlock inside nouveau_drm_postclose or any other nouveau ioctl call.

Weakness: CWE-667

Which versions are affected by CVE-2024-35786?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-35786?

Apply the vendor's patch.

Is CVE-2024-35786 being exploited?

There is no known exploitation of CVE-2024-35786 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as BELL-CVE-2024-35786, DEBIAN-CVE-2024-35786, GHSA-w36h-73v6-wg8q, UBUNTU-CVE-2024-35786.

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