Fixes: signed integer overflow: 4 * 538976288 cannot be represented in type 'int' Fixes: 18622/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VMDAUDIO_fuzzer-5092166174507008
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/vmdaudio.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/vmdaudio.c b/libavcodec/vmdaudio.c index e8c8a064c7..c7826fa3ce 100644 --- a/libavcodec/vmdaudio.c +++ b/libavcodec/vmdaudio.c @@ -179,6 +179,9 @@ static int vmdaudio_decode_frame(AVCodecContext *avctx, void *data, /* drop incomplete chunks */ buf_size = audio_chunks * s->chunk_size; + if (silent_chunks + audio_chunks >= INT_MAX / avctx->block_align) + return AVERROR_INVALIDDATA; + /* get output buffer */ frame->nb_samples = ((silent_chunks + audio_chunks) * avctx->block_align) / avctx->channels; -- 2.23.0 _______________________________________________ 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".
