CVE-2026-23049 drm/panel-simple: fix connector type for DataImage SCF0700C48GGU18 panel
Missing connector type in Linux kernel panel driver causes kernel warnings and prevents panel operation, leading to local denial of service.
- 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-2026-23049?
CVE-2026-23049 is a denial of service vulnerability in Linux, published on 4 Feb 2026. 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/panel-simple: fix connector type for DataImage SCF0700C48GGU18 panel
The connector type for the DataImage SCF0700C48GGU18 panel is missing and devm_drm_panel_bridge_add() requires connector type to be set. This leads to a warning and a backtrace in the kernel log and panel does not work: " WARNING: CPU: 3 PID: 38 at drivers/gpu/drm/bridge/panel.c:379 devm_drm_of_get_bridge+0xac/0xb8 " The warning is triggered by a check for valid connector type in devm_drm_panel_bridge_add(). If there is no valid connector type set for a panel, the warning is printed and panel is not added. Fill in the missing connector type to fix the warning and make the panel operational once again.
Which versions are affected by CVE-2026-23049?
How do I fix CVE-2026-23049?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-23049 being exploited?
There is no known exploitation of CVE-2026-23049 in the wild and no public exploit code.
Sources
Also known as AZL-77307, BELL-CVE-2026-23049, DEBIAN-CVE-2026-23049, GHSA-gp84-h2r5-7wwf, ROOT-OS-UBUNTU-2204-CVE-2026-23049, ROOT-OS-UBUNTU-2404-CVE-2026-23049 and 1 more.