x86/mm/pat: Fix VM_PAT handling when fork() fails in copy_page_range()

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CVE-2025-22090 · Microsoft / collected KEV context

cve-program · CVE-2025-22090

• https://git.kernel.org/stable/c/a6623712ba8449876f0b3de9462831523fb851e4
• https://git.kernel.org/stable/c/b07398e8a5da517083f5c3f2daa8f6681b48ab28
• https://git.kernel.org/stable/c/8d6373f83f367dbed316ddeb178130a3a64b5b67
• https://git.kernel.org/stable/c/da381c33f3aa6406406c9fdf07b8b0b63e0ce722
• https://git.kernel.org/stable/c/de6185b8892d88142ef69768fe4077cbf40109c0
• https://git.kernel.org/stable/c/dc84bc2aba85a1508f04a936f9f9a15f64ebfb31

No related operational record is retained in the current change model.