Fixes: signed integer overflow: 119760682 - -2084600173 cannot be represented in type 'int' Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_VIVIDAS_fuzzer-6745781167587328
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/vividas.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavformat/vividas.c b/libavformat/vividas.c index e9954f73ed0..22f61db7576 100644 --- a/libavformat/vividas.c +++ b/libavformat/vividas.c @@ -643,7 +643,9 @@ static int viv_read_packet(AVFormatContext *s, if (viv->current_audio_subpacket < viv->n_audio_subpackets) { AVStream *astream; - int size = viv->audio_subpackets[viv->current_audio_subpacket+1].start - viv->audio_subpackets[viv->current_audio_subpacket].start; + int64_t size = viv->audio_subpackets[viv->current_audio_subpacket+1].start - (int64_t)viv->audio_subpackets[viv->current_audio_subpacket].start; + if (size < 0 || size != (int)size) + return AVERROR_INVALIDDATA; pb = viv->sb_pb; ret = av_get_packet(pb, pkt, size); -- 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".
