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 Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/icodec.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavformat/icodec.c b/libavformat/icodec.c index b47fa98f80..c061f3ec42 100644 --- a/libavformat/icodec.c +++ b/libavformat/icodec.c @@ -156,12 +156,14 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt) 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) -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
