CVE-2020-21688

Un uso de memoria previamente liberada de la pila en la función av_freep en el archivo libavutil/mem.c de FFmpeg versión 4.2, permite a atacantes ejecutar código arbitrario

It was discovered that FFmpeg would attempt to divide by zero when using Linear Predictive Coding or AAC codecs. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 21.10. It was discovered that FFmpeg incorrectly handled certain input. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 21.10.