CVE-2025-68179

The CVE-2025-68179 entry concerns the Linux kernel: on s390, enabling ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP can lead to crashes/data corruption due to page-table modifications not flushing TLBs. The fix is to disable ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP (a revert of the original patch), since HVO hook...