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avformat/aiffdec: Check for size overflow in header parsing

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Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-6723467048255488

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit bae2e19777)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-04-23 17:28:29 +02:00
parent 58700716b1
commit d84c0fa6f9
1 changed files with 3 additions and 0 deletions
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3
libavformat/aiffdec.c
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@ -102,6 +102,9 @@ static int get_aiff_header(AVFormatContext *s, int size,
int sample_rate;
unsigned int num_frames;
if (size == INT_MAX)
return AVERROR_INVALIDDATA;
if (size & 1)
size++;
par->codec_type = AVMEDIA_TYPE_AUDIO;