CVE-2025-39772 drm/hisilicon/hibmc: fix the hibmc loaded failed bug
A null pointer dereference in the Hisilicon hibmc DRM driver during failed initialization can cause a kernel crash, 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-2025-39772?
CVE-2025-39772 is a medium-severity vulnerability in Debian Debian Linux, published on 11 Sep 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:
drm/hisilicon/hibmc: fix the hibmc loaded failed bug
When hibmc loaded failed, the driver use hibmc_unload to free the resource, but the mutexes in mode.config are not init, which will access an NULL pointer. Just change goto statement to return, because hibnc_hw_init() doesn't need to free anything.
Weakness: CWE-476
Which versions are affected by CVE-2025-39772?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-39772?
Apply the vendor's patch.
Is CVE-2025-39772 being exploited?
There is no known exploitation of CVE-2025-39772 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-67241, AZL-74667, BELL-CVE-2025-39772, DEBIAN-CVE-2025-39772, GHSA-w9gm-5q74-cxmg, ROOT-OS-DEBIAN-11-CVE-2025-39772 and 3 more.