Message ID | 20190804164416.23266-10-michael@niedermayer.cc |
---|---|
State | Accepted |
Commit | aecc9b96d613f54d772e9475738bb54e0e1f182e |
Headers | show |
diff --git a/libavcodec/vorbisdec.c b/libavcodec/vorbisdec.c index a86d4c4c36..793f079737 100644 --- a/libavcodec/vorbisdec.c +++ b/libavcodec/vorbisdec.c @@ -1182,6 +1182,9 @@ static int vorbis_floor0_decode(vorbis_context *vc, q *= q; } + if (p + q == 0.0) + return AVERROR_INVALIDDATA; + /* calculate linear floor value */ q = exp((((amplitude*vf->amplitude_offset) / (((1ULL << vf->amplitude_bits) - 1) * sqrt(p + q)))
Fixes: division by zero Fixes: 16183/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VORBIS_fuzzer-5688966782648320 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavcodec/vorbisdec.c | 3 +++ 1 file changed, 3 insertions(+)