CVE-2026-74632

CVE-2026-74632 is a race condition in the Linux kernel mm/huge_memory subsystem affecting the reference-counted huge_zero_folio implementation. The shrinker (shrink_huge_zero_folio_scan()) can overwrite huge_zero_pfn with the ~0UL sentinel value after a concurrent get_huge_zero_folio() has alread...

PT-2026-79637

In the Linux kernel, the following vulnerability has been resolved: mm/huge memory: fix huge zero pfn race Patch series "mm/huge memory: fix huge zero pfn race", v2. There is a subtle race in the reference-counted huge zero folio implementation. The fast path atomic logic fails to account for the...