CVE-2026-80682

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the RISC-V memory management where vmemmap start pfn is computed by rounding phys ram base down to VMEMMAP ADDR ALIGN. A unit mismatch occurs because MAX FOLIO VMEMMAP ALIGN is measured in bytes of struct page storage, while VMEMMAP ADDR ALIGN is intended to align a physical address. This mismatch can lead to alignment failures on systems such as QEMU virt where the DRAM base is not aligned to MAX FOLIO NR PAGES * PAGE SIZE, potentially causing system warnings during sparse init() execution.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.