avcodec 2.2.x, as used in VideoLAN VLC media player before 2.2.7, allows out-of-bounds heap memory write due to calling memcpy() with a wrong size, leading to a denial of service (application crash) or possibly code execution (CVE-2017-10699). The VLC packages have been updated to version 2.2.8, which includes various security improvements in decoders and demuxers, as well as other bug fixes.