PT-2026-84926 · Linux · Linux
CVE-2026-80728
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Published
2026-09-03
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Updated
2026-09-03
None
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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)
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Related Identifiers
Affected Products
Linux