CVE-2023-52861 drm: bridge: it66121: Fix invalid connector dereference
A local attacker can cause a kernel crash by opening the sound card when no monitor is connected to the IT66121 bridge.
- 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-2023-52861?
CVE-2023-52861 is a medium-severity vulnerability in Linux kernel, published on 21 May 2024. 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: bridge: it66121: Fix invalid connector dereference
Fix the NULL pointer dereference when no monitor is connected, and the sound card is opened from userspace.
Instead return an empty buffer (of zeroes) as the EDID information to the sound framework if there is no connector attached.
Weakness: CWE-476
Which versions are affected by CVE-2023-52861?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-52861?
Apply the vendor's patch.
Is CVE-2023-52861 being exploited?
There is no known exploitation of CVE-2023-52861 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-52861, DEBIAN-CVE-2023-52861, GHSA-jmrp-7793-gxc2, UBUNTU-CVE-2023-52861.