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cve 2025 21696

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    CVE-2025-21696: Linux Kernel uffd_wp mremap Bug and Patch Guide

    The Linux kernel vulnerability tracked as CVE-2025-21696 — described upstream as “mm: clear uffd-wp PTE/PMD state on mremap” — is a correctness bug in the kernel’s memory-management paths that can produce kernel warnings, oopses, and denial-of-service conditions when specific userfaultfd and...
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    • cve 2025 21696 linux kernel memory management userfaultfd
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