Fixes: infinite loop Fixes: 26485/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-5126561373880320
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/iff.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavformat/iff.c b/libavformat/iff.c index 04fe8be4eb..fb76aed4c3 100644 --- a/libavformat/iff.c +++ b/libavformat/iff.c @@ -839,7 +839,7 @@ static int iff_read_packet(AVFormatContext *s, } else if (st->codecpar->codec_tag == ID_DST) { return read_dst_frame(s, pkt); } else { - if (iff->body_size > INT_MAX) + if (iff->body_size > INT_MAX || !iff->body_size) return AVERROR_INVALIDDATA; ret = av_get_packet(pb, pkt, iff->body_size); } @@ -875,6 +875,8 @@ static int iff_read_packet(AVFormatContext *s, pkt->flags |= AV_PKT_FLAG_KEY; } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codecpar->codec_tag != ID_ANIM) { + if (iff->body_size > INT_MAX || !iff->body_size) + return AVERROR_INVALIDDATA; ret = av_get_packet(pb, pkt, iff->body_size); pkt->pos = pos; if (pos == iff->body_pos) -- 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".
