CVE-2022-50847 drm/bridge: it6505: Initialize AUX channel in it6505_i2c_probe
A local attacker can trigger a kernel crash via a NULL pointer dereference in the it6505 DRM bridge driver during boot.
- 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-2022-50847?
CVE-2022-50847 is a vulnerability in Linux, published on 30 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:
drm/bridge: it6505: Initialize AUX channel in it6505_i2c_probe
During device boot, the HPD interrupt could be triggered before the DRM subsystem registers it6505 as a DRM bridge. In such cases, the driver tries to access AUX channel and causes NULL pointer dereference. Initializing the AUX channel earlier to prevent such error.
Which versions are affected by CVE-2022-50847?
How do I fix CVE-2022-50847?
Apply the vendor's patch.
Is CVE-2022-50847 being exploited?
There is no known exploitation of CVE-2022-50847 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50847, GHSA-78f2-hq34-889m, UBUNTU-CVE-2022-50847.