Swftools post-release use vulnerability

Swftools is a set of utilities for working with Adobe Flash files (SWF files). swftools 2020-12-22 and earlier versions contain a post-release usage vulnerability that stems from the function swf_FontExtract_DefineTextCallback() located in swftext.c in swftext.c has a heap-based post-release reuse issue. An attacker could exploit this vulnerability to enable code execution.