CVE-2025-38041
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-06-18

Last updated on: 2025-11-14

Assigner: kernel.org

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.
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Meta Information
Published
2025-06-18
Last Modified
2025-11-14
Generated
2026-05-07
AI Q&A
2025-06-18
EPSS Evaluated
2026-05-05
NVD
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
Helpful Resources
Exploitability
CWE
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CWE ID Description
CWE-NVD-CWE-noinfo
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AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability involves the Linux kernel's handling of the GPU clock frequency changes on the H616 platform. The GPU's PLL (Phase-Locked Loop) does not support dynamic frequency changes according to the H616 manual. Attempts to perform dynamic voltage and frequency scaling (DVFS) on the GPU cause system errors such as panfrost kernel oops and GPU hangs. The fix involves reparenting the GPU clock to the GPU1 clock during frequency changes, following the algorithm described in the manual and reusing existing CPU PLL notifier code to safely change the frequency.


How can this vulnerability impact me? :

This vulnerability can cause system instability when the GPU frequency is changed dynamically, leading to kernel panics (panfrost oops) and GPU hangs. This can result in crashes, degraded system performance, and potential loss of data or interrupted operations on affected devices using the H616 platform with the Linux kernel.


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