cve-2024-46710
Vulnerability from cvelistv5
Published
2024-09-13 06:33
Modified
2024-12-19 09:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Prevent unmapping active read buffers The kms paths keep a persistent map active to read and compare the cursor buffer. These maps can race with each other in simple scenario where: a) buffer "a" mapped for update b) buffer "a" mapped for compare c) do the compare d) unmap "a" for compare e) update the cursor f) unmap "a" for update At step "e" the buffer has been unmapped and the read contents is bogus. Prevent unmapping of active read buffers by simply keeping a count of how many paths have currently active maps and unmap only when the count reaches 0.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0851b1ec650adadcaa23ec96daad95a55bf966f0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/58a3714db4d9dcaeb9fc4905141e17b9f536c0a5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aba07b9a0587f50e5d3346eaa19019cf3f86c0eaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d5228d158e4c0b1663b3983044913c15c3d0135ePatch
Impacted products
Vendor Product Version
Linux Linux Version: 5.19
Show details on NVD website

To clipboard 

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    "dateReserved": "2024-09-11T15:12:18.252Z",
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}


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