UBUNTU-CVE-2026-72172

In the Linux kernel, the following vulnerability has been resolved: mm/mminit: fix uninitialized struct pages for ZONEDEVICE If DAX memory is hotplugged into an unoccupied subsection of an early section, sectionactivate reuses the unoptimized boot memmap. However, compoundnrpages still assumes th...

CVE-2026-72172

CVE-2026-72172 affects the Linux kernel, specifically the mm/mm_init path related to ZONE_DEVICE. The issue occurs when DAX memory is hotplugged into an unoccupied subsection of an early section, causing section_activate() to reuse the boot memmap while compound_nr_pages() assumes vmemmap optimiz...