An infinite loop when reaching EOL unexpectedly in compose/parser.c (aka the keymap parser) in xkbcommon before 0.8.1 could be used by local attackers to cause a denial of service during parsing of crafted keymap files.
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xkbcommon | Xkbcommon | * | 0.8.1 (excluding) |
| Red Hat Enterprise Linux 7 | RedHat | gdm-1:3.28.2-16.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | libX11-0:1.6.7-2.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | libxkbcommon-0:0.7.1-3.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | mesa-libGLw-0:8.0.0-5.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | xorg-x11-drv-ati-0:19.0.1-2.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | xorg-x11-drv-vesa-0:2.4.0-3.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | xorg-x11-drv-wacom-0:0.36.1-3.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | xorg-x11-server-0:1.20.4-7.el7 | * |
| Libxkbcommon | Ubuntu | bionic | * |
| Libxkbcommon | Ubuntu | trusty | * |
| Libxkbcommon | Ubuntu | upstream | * |
| Libxkbcommon | Ubuntu | xenial | * |