cve 2025 21949

  1. LoongArch Linux Kernel Bug CVE-2025-21949: Hugetlbfs PMD Alignment Fix

    A Linux kernel correctness bug affecting LoongArch hugetlb mappings — tracked as CVE-2025-21949 — can produce a kernel BUG during hugetlbfs unmapping when the hugetlb mmap base is not aligned to the PMD (Page Middle Directory) size. The vulnerability is availability-first: reproducible kernel...