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avcodec/utils: Check for overflow with ATRAC* in get_audio_frame_duration()

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Fixes: signed integer overflow: 1024 * 13129048 cannot be represented in type 'int'
Fixes: 26378/clusterfuzz-testcase-minimized-ffmpeg_dem_CODEC2RAW_fuzzer-5634018353348608

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-10-16 13:30:29 +02:00
parent 3fbf873792
commit 01bb12f883
1 changed files with 4 additions and 1 deletions
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5
libavcodec/utils.c
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@ -1614,7 +1614,10 @@ static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
case AV_CODEC_ID_MP1: return 384;
case AV_CODEC_ID_ATRAC1: return 512;
case AV_CODEC_ID_ATRAC9:
case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
case AV_CODEC_ID_ATRAC3:
if (framecount > INT_MAX/1024)
return 0;
return 1024 * framecount;
case AV_CODEC_ID_ATRAC3P: return 2048;
case AV_CODEC_ID_MP2:
case AV_CODEC_ID_MUSEPACK7: return 1152;