CVE-2015-6761

La función update_dimensions en libavcodec/vp8.c en FFmpeg hasta la versión 2.8.1, como se utiliza en Google Chrome en versiones anteriores a 46.0.2490.71 y otros productos, confía en una cuenta de partición de coeficiente durante una operación multi-hilo, lo que permite a atacantes remotos provocar una denegación de servicio (condición de carrera y corrupción de memoria) o posiblemente tener otro impacto no especificado a través de un archivo WebM manipulado.

USN-2770-1 fixed vulnerabilities in Oxide in Ubuntu 14.04 LTS and Ubuntu 15.04. This update provides the corresponding updates for Ubuntu 15.10. It was discovered that ContainerNode::parserInsertBefore in Blink would incorrectly proceed with a DOM tree insertion in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to bypass same origin restrictions. A use-after-free was discovered in the service worker implementation in Chromium. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking the program. Various other issues were also addressed.