CVE-2026-93193 drm/rockchip: analogix_dp: Fix OF node reference leak via auto cleanup
A reference leak in the Rockchip DisplayPort driver can lead to resource exhaustion and 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-2026-93193?
CVE-2026-93193 is a denial of service vulnerability in Linux, published on 17 Sep 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/rockchip: analogix_dp: Fix OF node reference leak via auto cleanup
Sashiko reported a reference leak in rockchip_dp_drm_encoder_enable(), the of_get_child_by_name() function does not call of_node_put() in a symmetrical way [1].
Fix the device node reference leak by using __free(device_node) to automatically manage of_node_put() for all device nodes.
Which versions are affected by CVE-2026-93193?
How do I fix CVE-2026-93193?
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-2026-93193 being exploited?
There is no known exploitation of CVE-2026-93193 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-93193, DEBIAN-CVE-2026-93193, GHSA-f539-4xw9-gw39, UBUNTU-CVE-2026-93193.