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Code Issues Releases Activity

avcodec/takdec: Fix multiple runtime error: signed integer overflow: 637072 * 4096 cannot be represented in type 'int'

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Fixes: 2079/clusterfuzz-testcase-minimized-5345861779324928

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 e4efd41b83e78c7f2ee3e74bee90226110743a8e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-06-06 16:01:16 +02:00
parent 34887d091d
commit 07944df9a7
1 changed files with 2 additions and 2 deletions
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4
libavcodec/takdec.c
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@ -862,7 +862,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
if (s->sample_shift[chan] > 0) if (s->sample_shift[chan] > 0)
for (i = 0; i < s->nb_samples; i++) for (i = 0; i < s->nb_samples; i++)
decoded[i] *= 1 << s->sample_shift[chan]; decoded[i] *= 1U << s->sample_shift[chan];
} }
} }
@ -904,7 +904,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
for (chan = 0; chan < avctx->channels; chan++) { for (chan = 0; chan < avctx->channels; chan++) {
int32_t *samples = (int32_t *)frame->extended_data[chan]; int32_t *samples = (int32_t *)frame->extended_data[chan];
for (i = 0; i < s->nb_samples; i++) for (i = 0; i < s->nb_samples; i++)
samples[i] *= 1 << 8; samples[i] *= 1U << 8;
} }
break; break;
} }