drivers/input/serio/i8042.c in the Linux kernel before 4.12.4 allows attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact because the port->exists value can change after it is validated.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | * | 3.2.94 (excluding) |
| Linux_kernel | Linux | 3.3 (including) | 3.16.49 (excluding) |
| Linux_kernel | Linux | 3.17 (including) | 3.18.63 (excluding) |
| Linux_kernel | Linux | 3.19 (including) | 4.1.44 (excluding) |
| Linux_kernel | Linux | 4.2 (including) | 4.4.79 (excluding) |
| Linux_kernel | Linux | 4.5 (including) | 4.9.40 (excluding) |
| Linux_kernel | Linux | 4.10 (including) | 4.12.4 (excluding) |
| Linux | Ubuntu | precise/esm | * |
| Linux | Ubuntu | trusty | * |
| Linux | Ubuntu | upstream | * |
| Linux | Ubuntu | xenial | * |
| Linux-armadaxp | Ubuntu | upstream | * |
| Linux-aws | Ubuntu | upstream | * |
| Linux-aws | Ubuntu | xenial | * |
| Linux-azure | Ubuntu | upstream | * |
| Linux-azure | Ubuntu | xenial | * |
| Linux-euclid | Ubuntu | esm-apps/xenial | * |
| Linux-euclid | Ubuntu | upstream | * |
| Linux-euclid | Ubuntu | xenial | * |
| Linux-flo | Ubuntu | esm-apps/xenial | * |
| Linux-flo | Ubuntu | trusty | * |
| Linux-flo | Ubuntu | upstream | * |
| Linux-flo | Ubuntu | xenial | * |
| Linux-gcp | Ubuntu | upstream | * |
| Linux-gcp | Ubuntu | xenial | * |
| 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 | Ubuntu | xenial | * |
| Linux-hwe-edge | Ubuntu | bionic | * |
| Linux-hwe-edge | Ubuntu | upstream | * |
| Linux-hwe-edge | Ubuntu | xenial | * |
| Linux-kvm | Ubuntu | upstream | * |
| Linux-kvm | Ubuntu | xenial | * |
| Linux-linaro-omap | Ubuntu | upstream | * |
| Linux-linaro-shared | Ubuntu | upstream | * |
| Linux-linaro-vexpress | Ubuntu | upstream | * |
| Linux-lts-quantal | Ubuntu | precise/esm | * |
| Linux-lts-quantal | Ubuntu | upstream | * |
| Linux-lts-raring | Ubuntu | precise/esm | * |
| Linux-lts-raring | Ubuntu | upstream | * |
| Linux-lts-saucy | Ubuntu | precise/esm | * |
| Linux-lts-saucy | 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 | trusty/esm | * |
| Linux-lts-vivid | Ubuntu | upstream | * |
| Linux-lts-wily | Ubuntu | trusty | * |
| Linux-lts-wily | Ubuntu | upstream | * |
| Linux-lts-xenial | Ubuntu | trusty | * |
| 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-qcm-msm | Ubuntu | upstream | * |
| Linux-raspi2 | Ubuntu | upstream | * |
| Linux-raspi2 | Ubuntu | xenial | * |
| Linux-snapdragon | Ubuntu | upstream | * |
| Linux-snapdragon | Ubuntu | xenial | * |
| Linux-ti-omap4 | Ubuntu | upstream | * |