CVE-2025-68739 PM / devfreq: hisi: Fix potential UAF in OPP handling
A use-after-free vulnerability in the Linux kernel's Hisilicon devfreq driver allows local attackers to potentially execute code or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-68739?
CVE-2025-68739 is an use after free vulnerability in Linux, published on 24 Dec 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:
PM / devfreq: hisi: Fix potential UAF in OPP handling
Ensure all required data is acquired before calling dev_pm_opp_put(opp) to maintain correct resource acquisition and release order.
Which versions are affected by CVE-2025-68739?
How do I fix CVE-2025-68739?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-68739 being exploited?
There is no known exploitation of CVE-2025-68739 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-68739, DEBIAN-CVE-2025-68739, GHSA-4mp2-rpmv-4xrr, UBUNTU-CVE-2025-68739.