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avcodec/adpcm: Fix adpcm_ima_wav padding

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Fixes out of array read
Fixes: f29f134ea5f5590df554a7733294a587/asan_stack-oob_309d14e_9188_ea01743d6355aff20530f3d4cdaa841a.wav

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-08-21 01:42:20 +02:00
parent 2624695484
commit f2a9a30fd6
1 changed files with 1 additions and 1 deletions
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2
libavcodec/adpcm.c
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@ -803,7 +803,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
if (avctx->bits_per_coded_sample != 4) {
int samples_per_block = ff_adpcm_ima_block_samples[avctx->bits_per_coded_sample - 2];
int block_size = ff_adpcm_ima_block_sizes[avctx->bits_per_coded_sample - 2];
uint8_t temp[20] = { 0 };
uint8_t temp[20 + AV_INPUT_BUFFER_PADDING_SIZE] = { 0 };
GetBitContext g;
for (n = 0; n < (nb_samples - 1) / samples_per_block; n++) {