File ImageMagick-CVE-2017-17879.patch of Package ImageMagick.openSUSE_Leap_42.3_Update
--- a/coders/png.c +++ b/coders/png.c @@ -5712,7 +5712,7 @@ static Image *ReadOneMNGImage(MngInfo* mng_info, const ImageInfo *image_info, p++; /* framing mode */ - while (*p && ((p-chunk) < (ssize_t) length)) + while (*p && ((p-chunk) < (ssize_t) length-1)) p++; /* frame name */ p++; /* frame name terminator */