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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
d8e408a82704c86ba87c3d58cfe69dcdb758aa07 to < 009c4d78bcf07c4ac2e3dd9f275b4eaa72b4f884affectedd8e408a82704c86ba87c3d58cfe69dcdb758aa07 to < f7276cdc1912325b64c33fcb1361952c06e55f63affectedd8e408a82704c86ba87c3d58cfe69dcdb758aa07 to < 8ad4838040e5515939c071a0f511ce2661a0889daffectedd8e408a82704c86ba87c3d58cfe69dcdb758aa07 to < 89fffbdf535ce659c1a26b51ad62070566e33b28affectedd8e408a82704c86ba87c3d58cfe69dcdb758aa07 to < 4b4cff994a27ebf7bd3fb9a798a1cdfa8d01b724affectedd8e408a82704c86ba87c3d58cfe69dcdb758aa07 to < 6186c93560889265bfe0914609c274eff40bbeb5affectedd8e408a82704c86ba87c3d58cfe69dcdb758aa07 to < be4a2a81b6b90d1a47eaeaace4cc8e2cb57b96c7affected
Linux Linux
Default version status: affected
5.3affected0 to < 5.3unaffected5.4.283 to ≤ 5.4.*unaffected5.10.225 to ≤ 5.10.*unaffected5.15.166 to ≤ 5.15.*unaffected6.1.91 to ≤ 6.1.*unaffected6.6.31 to ≤ 6.6.*unaffected6.8.10 to ≤ 6.8.*unaffected6.9 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/009c4d78bcf07c4ac2e3dd9f275b4eaa72b4f884 ↗
- https://git.kernel.org/stable/c/f7276cdc1912325b64c33fcb1361952c06e55f63 ↗
- https://git.kernel.org/stable/c/8ad4838040e5515939c071a0f511ce2661a0889d ↗
- https://git.kernel.org/stable/c/89fffbdf535ce659c1a26b51ad62070566e33b28 ↗
- https://git.kernel.org/stable/c/4b4cff994a27ebf7bd3fb9a798a1cdfa8d01b724 ↗
- https://git.kernel.org/stable/c/6186c93560889265bfe0914609c274eff40bbeb5 ↗
- https://git.kernel.org/stable/c/be4a2a81b6b90d1a47eaeaace4cc8e2cb57b96c7 ↗
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html ↗