CVE-2024-47729 drm/xe: Use reserved copy engine for user binds on faulting devices

Medium 5.5 Published Updated

A deadlock in the Linux kernel's Xe GPU driver can cause a denial of service when user binds interact with faulting engines.

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-2024-47729?

CVE-2024-47729 is a medium-severity denial of service vulnerability in Linux kernel, published on 21 Oct 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/xe: Use reserved copy engine for user binds on faulting devices

User binds map to engines with can fault, faults depend on user binds completion, thus we can deadlock. Avoid this by using reserved copy engine for user binds on faulting devices.

While we are here, normalize bind queue creation with a helper.

v2: - Pass in extensions to bind queue creation (CI) v3: - s/resevered/reserved (Lucas) - Fix NULL hwe check (Jonathan)

Which versions are affected by CVE-2024-47729?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-47729?

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-2024-47729 being exploited?

There is no known exploitation of CVE-2024-47729 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as BELL-CVE-2024-47729, DEBIAN-CVE-2024-47729, GHSA-gfg8-9h5v-39hx, ROOT-OS-UBUNTU-2404-CVE-2024-47729, UBUNTU-CVE-2024-47729.

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