From 66deab3a2609aa9462709c82be5d4efbb6af2a08 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 26 Dec 2020 11:50:28 +0100 Subject: [PATCH] avformat/vividas: Check number of audio channels Fixes: division by 0 Fixes: 28597/clusterfuzz-testcase-minimized-ffmpeg_dem_VIVIDAS_fuzzer-5752201490333696 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/vividas.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/vividas.c b/libavformat/vividas.c index 96e0631b06..d745770dc4 100644 --- a/libavformat/vividas.c +++ b/libavformat/vividas.c @@ -373,7 +373,7 @@ static int track_header(VividasDemuxContext *viv, AVFormatContext *s, uint8_t * avio_rl16(pb); //codec_subid st->codecpar->channels = avio_rl16(pb); // channels st->codecpar->sample_rate = avio_rl32(pb); // sample_rate - if (st->codecpar->sample_rate <= 0) + if (st->codecpar->sample_rate <= 0 || st->codecpar->channels <= 0) return AVERROR_INVALIDDATA; avio_seek(pb, 10, SEEK_CUR); // data_1 q = avio_r8(pb);