CVE-2022-50878 gpu: lontium-lt9611: Fix NULL pointer dereference in lt9611_connector_init()

Not scored Published 30 Dec 2025 Updated 11 May 2026

A NULL pointer dereference in the Lontium LT9611 GPU driver can cause a system crash, requiring a kernel patch.

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-2022-50878?

CVE-2022-50878 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:

gpu: lontium-lt9611: Fix NULL pointer dereference in lt9611_connector_init()

A NULL check for bridge->encoder shows that it may be NULL, but it already been dereferenced on all paths leading to the check. 812 if (!bridge->encoder) {

Dereference the pointer bridge->encoder. 810 drm_connector_attach_encoder(&lt9611->connector, bridge->encoder);

Which versions are affected by CVE-2022-50878?

How do I fix CVE-2022-50878?

Apply the vendor's patch.

Is CVE-2022-50878 being exploited?

There is no known exploitation of CVE-2022-50878 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2022-50878, GHSA-hp2j-q336-h2mp, UBUNTU-CVE-2022-50878.