mm/userfaultfd: reset ptes when close() for wr-protected ones

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CVE-2024-36881 · Microsoft / collected KEV context

cve-program · CVE-2024-36881

• https://git.kernel.org/stable/c/1da0471de653b13c8f63dcd32a23574d683c8310
• https://git.kernel.org/stable/c/377f3a9a3d032a52325a5b110379a25dd1ab1931
• https://git.kernel.org/stable/c/8d8b68a5b0c9fb23d37df06bb273ead38fd5a29d
• https://git.kernel.org/stable/c/c88033efe9a391e72ba6b5df4b01d6e628f4e734

• mm/userfaultfd: reset ptes when close() for wr-protected ones · Affected-version evidence changed · 30 Oct 2026