PT-2026-72856

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the drm/gpusvm component where Virtual Memory Areas VMAs marked with VM IO or VM PFNMAP are not backed by struct page objects. Since GPUSVM requires these objects to...

PT-2021-27041

Name of the Vulnerable Software and Affected Versions Linux Kernel versions v5.15 through v5.15.6 Description The issue is related to a fix in the mmap function to include VM IO and VM DONTDUMP. The actual impact and attack plausibility have not yet been proven. Recommendations For Linux Kernel...

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...

PT-2021-4246

Name of the Vulnerable Software and Affected Versions Linux affected versions not specified Description The issue is caused by improper handling of VM IO|VM PFNMAP vmas in KVM, which can bypass RO checks and lead to pages being freed while still accessible by the VMM and guest. This allows users...

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...