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avformat/xmv: Make bitrate 64bit

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Fixes: signed integer overflow: 32 * 538976288 cannot be represented in type 'int'
Fixes: 15633/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5752273981931520

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-07-13 20:12:41 +02:00
parent 62d10ec35c
commit 39a6a79bcb
1 changed files with 2 additions and 2 deletions
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4
libavformat/xmv.c
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@ -79,7 +79,7 @@ typedef struct XMVAudioPacket {
uint16_t channels; ///< Number of channels.
int32_t sample_rate; ///< Sampling rate.
uint16_t bits_per_sample; ///< Bits per compressed sample.
uint32_t bit_rate; ///< Bits of compressed data per second.
uint64_t bit_rate; ///< Bits of compressed data per second.
uint16_t flags; ///< Flags
unsigned block_align; ///< Bytes per compressed block.
uint16_t block_samples; ///< Decompressed samples per compressed block.
@ -191,7 +191,7 @@ static int xmv_read_header(AVFormatContext *s)
packet->bits_per_sample = avio_rl16(pb);
packet->flags = avio_rl16(pb);
packet->bit_rate = packet->bits_per_sample *
packet->bit_rate = (uint64_t)packet->bits_per_sample *
packet->sample_rate *
packet->channels;
packet->block_align = XMV_BLOCK_ALIGN_SIZE * packet->channels;