CVE-2026-97621 drm/rockchip: analogix_dp: fix unchecked bound endpoint name length
A stack buffer overflow in the Rockchip DisplayPort driver allows local attackers to execute arbitrary code or crash the system via long device tree paths.
- 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-2026-97621?
CVE-2026-97621 is a memory corruption vulnerability in Linux, published on 25 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 unchecked bound endpoint name length
rockchip_dp_drm_encoder_enable() uses sprintf() to format a device tree path into a 32-byte stack buffer. Device tree paths are not limited to this size, so a sufficiently long path can overflow the buffer.
Use snprintf() with the destination size to truncate the generated name and keep the writes within bounds.
Which versions are affected by CVE-2026-97621?
How do I fix CVE-2026-97621?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-97621 being exploited?
There is no known exploitation of CVE-2026-97621 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-97621, DEBIAN-CVE-2026-97621, GHSA-q6xv-ghr2-54fw, UBUNTU-CVE-2026-97621.