CVE-2021-47551 drm/amd/amdkfd: Fix kernel panic when reset failed and been triggered again
A kernel panic occurs in the AMD KFD driver during repeated GPU resets in SRIOV configurations, causing a 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-2021-47551?
CVE-2021-47551 is a high-severity denial of service vulnerability in Linux kernel, published on 24 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/amd/amdkfd: Fix kernel panic when reset failed and been triggered again
In SRIOV configuration, the reset may failed to bring asic back to normal but stop cpsch already been called, the start_cpsch will not be called since there is no resume in this case. When reset been triggered again, driver should avoid to do uninitialization again.
Weakness: CWE-770
Which versions are affected by CVE-2021-47551?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2021-47551?
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-2021-47551 being exploited?
There is no known exploitation of CVE-2021-47551 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2021-47551, UBUNTU-CVE-2021-47551.