CVE-2026-45958 drm/exynos: vidi: fix to avoid directly dereferencing user pointer
A missing copy_from_user call in the Exynos DRM driver allows arbitrary kernel memory access or crashes via a null pointer dereference.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-45958?
CVE-2026-45958 is a high-severity vulnerability in Linux kernel, published on 27 May 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/exynos: vidi: fix to avoid directly dereferencing user pointer
In vidi_connection_ioctl(), vidi->edid(user pointer) is directly dereferenced in the kernel.
This allows arbitrary kernel memory access from the user space, so instead of directly accessing the user pointer in the kernel, we should modify it to copy edid to kernel memory using copy_from_user() and use it.
Weakness: CWE-476
Which versions are affected by CVE-2026-45958?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-45958?
Apply the vendor's patch.
Is CVE-2026-45958 being exploited?
There is no known exploitation of CVE-2026-45958 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-88770, BELL-CVE-2026-45958, DEBIAN-CVE-2026-45958, GHSA-x43q-w948-5wxq, ROOT-OS-DEBIAN-11-CVE-2026-45958, ROOT-OS-UBUNTU-2204-CVE-2026-45958 and 2 more.