PT-2026-72856

In the Linux kernel, the following vulnerability has been resolved: drm/gpusvm: Reject VMAs with VM IO or VM PFNMAP when creating SVM ranges VMAs marked with VM IO or VM PFNMAP are not backed by struct page objects, which GPUSVM requires in order to operate correctly. In particular, get pages...

kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks

A flaw was found in the Linux kernel’s KVM implementation, where improper handing of the VMIO|VMPFNMAP VMAs in KVM bypasses RO checks and leads to pages being freed while still accessible by the VMM and guest. This flaw allows users who can start and control a VM to read/write random pages of...

CVE-2021-22543

An issue was discovered in Linux: KVM through Improper handling of VMIO|VMPFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and ca...

security flaw

Multiple drivers in Linux kernel 2.4.19 and earlier do not properly mark memory with the VMIO flag, which causes incorrect reference counts and may lead to a denial of service kernel panic when accessing freed kernel pages...