A flaw was found in Linux kernels KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a hosts userspace code has an ability to place malicious entries in the GDT, particularly to the per-cpu variables. An attacker can use this to escalate their privileges.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | * | 2.6.36 (excluding) |
| Linux-aws | Ubuntu | upstream | * |
| Linux-azure | Ubuntu | upstream | * |
| Linux-azure-edge | Ubuntu | bionic | * |
| Linux-azure-edge | Ubuntu | esm-infra/bionic | * |
| Linux-azure-edge | Ubuntu | upstream | * |
| Linux-euclid | Ubuntu | upstream | * |
| Linux-flo | Ubuntu | esm-apps/xenial | * |
| Linux-flo | Ubuntu | trusty | * |
| Linux-flo | Ubuntu | upstream | * |
| Linux-flo | Ubuntu | xenial | * |
| Linux-gcp | Ubuntu | upstream | * |
| Linux-gke | Ubuntu | upstream | * |
| Linux-gke | Ubuntu | xenial | * |
| Linux-goldfish | Ubuntu | esm-apps/xenial | * |
| Linux-goldfish | Ubuntu | trusty | * |
| Linux-goldfish | Ubuntu | upstream | * |
| Linux-goldfish | Ubuntu | xenial | * |
| Linux-grouper | Ubuntu | trusty | * |
| Linux-grouper | Ubuntu | upstream | * |
| Linux-hwe | Ubuntu | upstream | * |
| Linux-hwe-edge | Ubuntu | bionic | * |
| Linux-hwe-edge | Ubuntu | upstream | * |
| Linux-kvm | Ubuntu | upstream | * |
| Linux-lts-trusty | Ubuntu | upstream | * |
| Linux-lts-utopic | Ubuntu | trusty | * |
| Linux-lts-utopic | Ubuntu | upstream | * |
| Linux-lts-vivid | Ubuntu | trusty | * |
| Linux-lts-vivid | Ubuntu | upstream | * |
| Linux-lts-wily | Ubuntu | trusty | * |
| Linux-lts-wily | Ubuntu | upstream | * |
| Linux-lts-xenial | Ubuntu | upstream | * |
| Linux-maguro | Ubuntu | trusty | * |
| Linux-maguro | Ubuntu | upstream | * |
| Linux-mako | Ubuntu | esm-apps/xenial | * |
| Linux-mako | Ubuntu | trusty | * |
| Linux-mako | Ubuntu | upstream | * |
| Linux-mako | Ubuntu | xenial | * |
| Linux-manta | Ubuntu | trusty | * |
| Linux-manta | Ubuntu | upstream | * |
| Linux-oem | Ubuntu | upstream | * |
| Linux-raspi2 | Ubuntu | upstream | * |
| Linux-snapdragon | Ubuntu | upstream | * |
| Red Hat Enterprise Linux 6 | RedHat | kernel-0:2.6.32-754.3.5.el6 | * |
| Red Hat Enterprise Linux 6.4 Advanced Update Support | RedHat | kernel-0:2.6.32-358.91.4.el6 | * |
| Red Hat Enterprise Linux 6.5 Advanced Update Support | RedHat | kernel-0:2.6.32-431.91.3.el6 | * |
| Red Hat Enterprise Linux 6.6 Advanced Update Support | RedHat | kernel-0:2.6.32-504.72.4.el6 | * |
| Red Hat Enterprise Linux 6.6 Telco Extended Update Support | RedHat | kernel-0:2.6.32-504.72.4.el6 | * |
| Red Hat Enterprise Linux 6.7 Extended Update Support | RedHat | kernel-0:2.6.32-573.60.4.el6 | * |