CVE-2024-41011
drm/amdkfd: don't allow mapping the MMIO HDP page with large pages
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Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: don't allow mapping the MMIO HDP page with large pages We don't get the right offset in that case. The GPU has an unused 4K area of the register BAR space into which you can remap registers. We remap the HDP flush registers into this space to allow userspace (CPU or GPU) to flush the HDP when it updates VRAM. However, on systems with >4K pages, we end up exposing PAGE_SIZE of MMIO space.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/009c4d78bcf07c4ac2e3dd9f275b4eaa72b4f884
- https://git.kernel.org/stable/c/4b4cff994a27ebf7bd3fb9a798a1cdfa8d01b724
- https://git.kernel.org/stable/c/6186c93560889265bfe0914609c274eff40bbeb5
- https://git.kernel.org/stable/c/89fffbdf535ce659c1a26b51ad62070566e33b28
- https://git.kernel.org/stable/c/8ad4838040e5515939c071a0f511ce2661a0889d
References (8)
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