CVE-2026-80728 Revert "drm/amdgpu: fix aperture mapping leak"
A kernel page fault in the amdgpu driver during probe failure allows local attackers to cause a 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-2026-80728?
CVE-2026-80728 is a vulnerability in Linux, published on 3 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:
Revert "drm/amdgpu: fix aperture mapping leak"
devres teardown is LIFO. The aperture devres node was registered after the DRM device node, so devres_release_all() unmaps the aperture before the DRM device release callback fires amdgpu_device_fini_sw(). IP sw_fini callbacks (e.g. vcn_v4_0_sw_fini) write to fw_shared through a pointer derived from aper_base_kaddr, causing a kernel page fault on probe failure / rollback:
BUG: unable to handle page fault ... PMD 0 RIP: vcn_v4_0_sw_fini+0x7b/0x170 [amdgpu] Call Trace: amdgpu_device_fini_sw amdgpu_driver_release_kms devm_drm_dev_init_release devres_release_all
This reverts commit d871e99879cb5fd1fa798b006b4888887e63a17a.
(cherry picked from commit 336e0cd576817ac64a4b394ca2b3680029f3e37f)
Which versions are affected by CVE-2026-80728?
How do I fix CVE-2026-80728?
Apply the vendor's patch.
Is CVE-2026-80728 being exploited?
There is no known exploitation of CVE-2026-80728 in the wild and no public exploit code.
Sources
Also known as AZL-99059, BELL-CVE-2026-80728, DEBIAN-CVE-2026-80728, GHSA-gr66-4v49-m3fh, UBUNTU-CVE-2026-80728.