CVE-2023-52624 drm/amd/display: Wake DMCUB before executing GPINT commands
A missing wake sequence for DMCUB hardware in the Linux kernel can cause a system hang when executing GPINT commands.
- 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-2023-52624?
CVE-2023-52624 is a high-severity denial of service vulnerability in Linux kernel, published on 26 Mar 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/amd/display: Wake DMCUB before executing GPINT commands
[Why] DMCUB can be in idle when we attempt to interface with the HW through the GPINT mailbox resulting in a system hang.
[How] Add dc_wake_and_execute_gpint() to wrap the wake, execute, sleep sequence.
If the GPINT executes successfully then DMCUB will be put back into sleep after the optional response is returned.
It functions similar to the inbox command interface.
Weakness: CWE-77
Which versions are affected by CVE-2023-52624?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-52624?
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-2023-52624 being exploited?
There is no known exploitation of CVE-2023-52624 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-58698, AZL-58767, BELL-CVE-2023-52624, DEBIAN-CVE-2023-52624, GHSA-8qqh-mhqw-2cp3, ROOT-OS-DEBIAN-11-CVE-2023-52624 and 3 more.