A flaw was found in KVM. When updating a guest's page table entry, vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel, resulting in a denial of service condition.
2022-08-05T17:15:08.017
2024-11-21T06:40:09.267
Modified
CVSSv3.1: 7.8 (HIGH)
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Operating System | linux | linux_kernel | < 5.4.189 | Yes |
Operating System | linux | linux_kernel | < 5.10.110 | Yes |
Operating System | linux | linux_kernel | < 5.15.33 | Yes |
Operating System | linux | linux_kernel | < 5.16.19 | Yes |
Operating System | linux | linux_kernel | < 5.17.2 | Yes |
Operating System | fedoraproject | fedora | 36 | Yes |
Operating System | redhat | enterprise_linux | 8.0 | Yes |
Operating System | redhat | enterprise_linux | 9.0 | Yes |