CVE-2026-80582

CVE-2026-80582 affects the Linux kernel 's drm/shmem_helper component. The root cause is that the ->huge_fault handler fails to verify whether a PMD (Page Middle Directory) huge page mapping exceeds the boundaries of the VMA (Virtual Memory Area) before installing it. If the mapping does excee...

CVE-2026-80582: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: drm/shmemhelper: Check VMA boundaries for PMD mappings In the -hugefault handler do not install a PMD huge page mapping if the huge page exceeds the boundaries of the VMA. All other -hugefault handlers have similar checks and the...