Vulnerability CVE-2024-36018
Published: 2024-05-30

Description:
In the Linux kernel, the following vulnerability has been resolved:

nouveau/uvmm: fix addr/range calcs for remap operations

dEQP-VK.sparse_resources.image_rebind.2d_array.r64i.128_128_8
was causing a remap operation like the below.

op_remap: prev: 0000003fffed0000 00000000000f0000 00000000a5abd18a 0000000000000000
op_remap: next:
op_remap: unmap: 0000003fffed0000 0000000000100000 0
op_map: map: 0000003ffffc0000 0000000000010000 000000005b1ba33c 00000000000e0000

This was resulting in an unmap operation from 0x3fffed0000+0xf0000, 0x100000
which was corrupting the pagetables and oopsing the kernel.

Fixes the prev + unmap range calcs to use start/end and map back to addr/range.

 References:
https://git.kernel.org/stable/c/692a51bebf4552bdf0a79ccd68d291182a26a569
https://git.kernel.org/stable/c/0c16020d2b69a602c8ae6a1dd2aac9a3023249d6
https://git.kernel.org/stable/c/be141849ec00ef39935bf169c0f194ac70bf85ce
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