crypto/mcryptd.c in the Linux kernel before 4.8.15 allows local users to cause a denial of service (NULL pointer dereference and system crash) by using an AF_ALG socket with an incompatible algorithm, as demonstrated by mcryptd(md5).
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 | * | 4.8.14 (including) |
| Red Hat Enterprise Linux 7 | RedHat | kernel-rt-0:3.10.0-693.rt56.617.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | kernel-0:3.10.0-693.el7 | * |
| Linux | Ubuntu | precise | * |
| Linux | Ubuntu | precise/esm | * |
| Linux | Ubuntu | upstream | * |
| Linux | Ubuntu | vivid/ubuntu-core | * |
| Linux | Ubuntu | xenial | * |
| Linux | Ubuntu | yakkety | * |
| Linux-armadaxp | Ubuntu | precise | * |
| Linux-armadaxp | Ubuntu | upstream | * |
| Linux-aws | Ubuntu | upstream | * |
| Linux-aws | Ubuntu | xenial | * |
| Linux-azure | Ubuntu | upstream | * |
| Linux-euclid | Ubuntu | upstream | * |
| Linux-flo | Ubuntu | esm-apps/xenial | * |
| Linux-flo | Ubuntu | trusty | * |
| Linux-flo | Ubuntu | upstream | * |
| Linux-flo | Ubuntu | vivid/stable-phone-overlay | * |
| Linux-flo | Ubuntu | xenial | * |
| Linux-flo | Ubuntu | yakkety | * |
| Linux-gcp | Ubuntu | upstream | * |
| Linux-gke | Ubuntu | upstream | * |
| Linux-goldfish | Ubuntu | esm-apps/xenial | * |
| Linux-goldfish | Ubuntu | trusty | * |
| Linux-goldfish | Ubuntu | upstream | * |
| Linux-goldfish | Ubuntu | xenial | * |
| Linux-goldfish | Ubuntu | yakkety | * |
| Linux-goldfish | Ubuntu | zesty | * |
| 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-linaro-omap | Ubuntu | precise | * |
| Linux-linaro-omap | Ubuntu | upstream | * |
| Linux-linaro-shared | Ubuntu | precise | * |
| Linux-linaro-shared | Ubuntu | upstream | * |
| Linux-linaro-vexpress | Ubuntu | precise | * |
| Linux-linaro-vexpress | Ubuntu | upstream | * |
| Linux-lts-quantal | Ubuntu | precise | * |
| Linux-lts-quantal | Ubuntu | precise/esm | * |
| Linux-lts-quantal | Ubuntu | upstream | * |
| Linux-lts-raring | Ubuntu | precise | * |
| Linux-lts-raring | Ubuntu | precise/esm | * |
| Linux-lts-raring | Ubuntu | upstream | * |
| Linux-lts-saucy | Ubuntu | precise | * |
| Linux-lts-saucy | Ubuntu | precise/esm | * |
| Linux-lts-saucy | Ubuntu | upstream | * |
| Linux-lts-trusty | Ubuntu | precise | * |
| Linux-lts-trusty | Ubuntu | precise/esm | * |
| 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 | vivid/stable-phone-overlay | * |
| Linux-mako | Ubuntu | xenial | * |
| Linux-mako | Ubuntu | yakkety | * |
| Linux-manta | Ubuntu | trusty | * |
| Linux-manta | Ubuntu | upstream | * |
| Linux-oem | Ubuntu | upstream | * |
| Linux-qcm-msm | Ubuntu | precise | * |
| Linux-qcm-msm | Ubuntu | upstream | * |
| Linux-raspi2 | Ubuntu | upstream | * |
| Linux-raspi2 | Ubuntu | vivid/ubuntu-core | * |
| Linux-raspi2 | Ubuntu | xenial | * |
| Linux-raspi2 | Ubuntu | yakkety | * |
| Linux-snapdragon | Ubuntu | upstream | * |
| Linux-snapdragon | Ubuntu | xenial | * |
| Linux-snapdragon | Ubuntu | yakkety | * |
| Linux-ti-omap4 | Ubuntu | precise | * |
| Linux-ti-omap4 | Ubuntu | upstream | * |