CVE-2024-47729 drm/xe: Use reserved copy engine for user binds on faulting devices
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.
Other vulnerabilities in Linux kernel
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.