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 <mich...@niedermayer.cc> --- libavcodec/vorbisdec.c | 3 +++ 1 file changed, 3 insertions(+) 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))) -- 2.22.0 _______________________________________________ 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".
