From 8173a6c130cae04d947fa76007cddfdc591f2583 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 20 Mar 2022 00:01:16 +0100 Subject: avformat/apm: Check channels Fixes: division by 0 Fixes: 45643/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4957777905188864.fuzz Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/apm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libavformat') diff --git a/libavformat/apm.c b/libavformat/apm.c index 91eea86a57..baf7d2f941 100644 --- a/libavformat/apm.c +++ b/libavformat/apm.c @@ -140,7 +140,7 @@ static int apm_read_header(AVFormatContext *s) if (par->bits_per_coded_sample != 4) return AVERROR_INVALIDDATA; - if (channels > 2) + if (channels > 2 || channels == 0) return AVERROR_INVALIDDATA; av_channel_layout_default(&par->ch_layout, channels); -- cgit v1.2.3