Fixes: SEGV on unknown address 0x000000000000
Fixes: 26379/clusterfuzz-testcase-minimized-ffmpeg_dem_ICO_fuzzer-5709011753893888
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
IcoDemuxContext *ico = s->priv_data;
IcoImage *image;
AVIOContext *pb = s->pb;
- AVStream *st = s->streams[0];
+ AVStream *st;
int ret;
if (ico->current_image >= ico->nb_images)
return AVERROR_EOF;
+ st = s->streams[0];
+
image = &ico->images[ico->current_image];
if ((ret = avio_seek(pb, image->offset, SEEK_SET)) < 0)