CVE-2026-98785 drm/amd/display: check dc_state_create_copy() for NULL in dm_suspend
A null pointer dereference in the Linux kernel AMD display driver during GPU reset recovery can cause 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-2026-98785?
CVE-2026-98785 is a vulnerability in Linux, published on 18 Oct 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/amd/display: check dc_state_create_copy() for NULL in dm_suspend
dc_state_create_copy() can return NULL on allocation failure. dm_suspend() only conditionally skips dm_gpureset_toggle_interrupts() and continues execution, returning success. dm_resume() then dereferences the NULL cached_dc_state in link_enc_cfg_copy() and the following dc_state->stream_count loop, crashing during GPU reset recovery.
Return -ENOMEM immediately if the copy fails, so the caller aborts suspend instead of leaving a NULL cached state for resume.
(cherry picked from commit 84b6d7932fdd2857795a257f9f258562a3cddcab)
Which versions are affected by CVE-2026-98785?
How do I fix CVE-2026-98785?
Apply the vendor's patch.
Is CVE-2026-98785 being exploited?
There is no known exploitation of CVE-2026-98785 in the wild and no public exploit code.
Sources
Also known as AZL-108822, BELL-CVE-2026-98785, DEBIAN-CVE-2026-98785, GHSA-m7hp-r32v-xxxr, UBUNTU-CVE-2026-98785.