CVE-2025-39712 media: mt9m114: Fix deadlock in get_frame_interval/set_frame_interval
A deadlock in the mt9m114 camera driver causes a denial of service when setting or getting frame intervals.
- 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-2025-39712?
CVE-2025-39712 is a medium-severity vulnerability in Linux kernel, published on 5 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:
media: mt9m114: Fix deadlock in get_frame_interval/set_frame_interval
Getting / Setting the frame interval using the V4L2 subdev pad ops get_frame_interval/set_frame_interval causes a deadlock, as the subdev state is locked in the [1] but also in the driver itself.
In [2] it's described that the caller is responsible to acquire and release the lock in this case. Therefore, acquiring the lock in the driver is wrong.
Remove the lock acquisitions/releases from mt9m114_ifp_get_frame_interval() and mt9m114_ifp_set_frame_interval().
[1] drivers/media/v4l2-core/v4l2-subdev.c - line 1129 [2] Documentation/driver-api/media/v4l2-subdev.rst
Weakness: CWE-667
Which versions are affected by CVE-2025-39712?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-39712?
Apply the vendor's patch.
Is CVE-2025-39712 being exploited?
There is no known exploitation of CVE-2025-39712 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-39712, DEBIAN-CVE-2025-39712, GHSA-7rj5-g3mr-xmp6, ROOT-OS-DEBIAN-13-CVE-2025-39712, ROOT-OS-UBUNTU-2404-CVE-2025-39712, UBUNTU-CVE-2025-39712.