CVE-2025-38041 clk: sunxi-ng: h616: Reparent GPU clock during frequency changes
A flaw in the Linux kernel's H616 GPU clock driver causes system hangs and oopses during dynamic frequency scaling, 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-2025-38041?
CVE-2025-38041 is a medium-severity denial of service vulnerability in Linux kernel, published on 18 Jun 2025. 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:
clk: sunxi-ng: h616: Reparent GPU clock during frequency changes
The H616 manual does not state that the GPU PLL supports dynamic frequency configuration, so we must take extra care when changing the frequency. Currently any attempt to do device DVFS on the GPU lead to panfrost various ooops, and GPU hangs.
The manual describes the algorithm for changing the PLL frequency, which the CPU PLL notifier code already support, so we reuse that to reparent the GPU clock to GPU1 clock during frequency changes.
Which versions are affected by CVE-2025-38041?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-38041?
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-2025-38041 being exploited?
There is no known exploitation of CVE-2025-38041 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-63980, AZL-70280, BELL-CVE-2025-38041, DEBIAN-CVE-2025-38041, GHSA-84x2-rfrf-6f2c, ROOT-OS-DEBIAN-11-CVE-2025-38041 and 5 more.