UBUNTU-CVE-2017-14169

In the mxfreadprimerpack function in libavformat/mxfdec.c in FFmpeg 3.3.3 - 2.4, an integer signedness error might occur when a crafted file, which claims a large "itemnum" field such as 0xffffffff, is provided. As a result, the variable "itemnum" turns negative, bypassing the check for a large...