CVE-2023-54018 drm/msm/hdmi: Add missing check for alloc_ordered_workqueue
A missing null check in the Linux kernel's HDMI driver can lead to a null pointer dereference, causing a system crash.
- 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-2023-54018?
CVE-2023-54018 is a vulnerability in Linux, published on 24 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/msm/hdmi: Add missing check for alloc_ordered_workqueue
Add check for the return value of alloc_ordered_workqueue as it may return NULL pointer and cause NULL pointer dereference in `hdmi_hdcp.c` and `hdmi_hpd.c`.
Patchwork: https://patchwork.freedesktop.org/patch/517211/
Which versions are affected by CVE-2023-54018?
How do I fix CVE-2023-54018?
Apply the vendor's patch.
Is CVE-2023-54018 being exploited?
There is no known exploitation of CVE-2023-54018 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-54018, DEBIAN-CVE-2023-54018, GHSA-ghvq-vpw4-hmq7, UBUNTU-CVE-2023-54018.