CVE-2026-89966

CVE-2026-89966 affects the Linux kernel in the mm/hugetlb_cma subsystem. The root cause is a NULL nodemask dereference in hugetlb_cma_alloc_frozen_folio(): when alloc_buddy_hugetlb_folio_with_mpol() passes a NULL nodemask as a fallback for gigantic (e.g., 1 GB) hugepage allocations, the function ...