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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-20 21:13:01 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-15 01:01:22 +0100 |
| commit | 6b7bcd437e590f1678cd6588dcb335d092a1e048 (patch) | |
| tree | 4462cdfb5d7b102b700aff6336f8cbcb2af38b9c | |
| parent | a9cc69c0d59057ea172a107e0308fdf5fd8fc04e (diff) | |
| download | ffmpeg-6b7bcd437e590f1678cd6588dcb335d092a1e048.tar.gz | |
avcodec/decode: Fix integer overflow in max_samples check
Fixes: signed integer overflow: 1677721600 * 32 cannot be represented in type 'int'
Fixes: 18885/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFWAVESYNTH_fuzzer-5741242185154560
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/decode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/decode.c b/libavcodec/decode.c index 0883c7209c..cd275bacc4 100644 --- a/libavcodec/decode.c +++ b/libavcodec/decode.c @@ -1925,7 +1925,7 @@ static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags) return AVERROR(EINVAL); } } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) { - if (frame->nb_samples * avctx->channels > avctx->max_samples) { + if (frame->nb_samples * (int64_t)avctx->channels > avctx->max_samples) { av_log(avctx, AV_LOG_ERROR, "samples per frame %d, exceeds max_samples %"PRId64"\n", frame->nb_samples, avctx->max_samples); return AVERROR(EINVAL); } |