[FFmpeg-devel] [PATCH 1/3] avcodec/ffwavesynth: Check sample rate before use
Michael Niedermayer
michael at niedermayer.cc
Mon Jul 15 01:35:47 EEST 2019
Fixes: division by zero
Fixes: 15725/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFWAVESYNTH_fuzzer-5641231956180992
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
libavcodec/ffwavesynth.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/ffwavesynth.c b/libavcodec/ffwavesynth.c
index 793eada7a5..1dbfaa5847 100644
--- a/libavcodec/ffwavesynth.c
+++ b/libavcodec/ffwavesynth.c
@@ -270,7 +270,7 @@ static int wavesynth_parse_extradata(AVCodecContext *avc)
dt = in->ts_end - in->ts_start;
switch (in->type) {
case WS_SINE:
- if (edata_end - edata < 20)
+ if (edata_end - edata < 20 || avc->sample_rate <= 0)
return AVERROR(EINVAL);
f1 = AV_RL32(edata + 0);
f2 = AV_RL32(edata + 4);
--
2.22.0
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