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avcodec/h264: Undefined behavior (left shift of 12852653 by 8 places cannot be represented in type 'int')

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Fixes: asan_heap-oob_84f75d_8_asan_heap-oob_a2a00a_341_mbc.ts

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-10-08 04:23:03 +02:00
parent 344f8d307a
commit f3296b9454
1 changed files with 1 additions and 1 deletions
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2
libavcodec/h264.c
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@ -1358,7 +1358,7 @@ static int get_avc_nalsize(H264Context *h, const uint8_t *buf,
return -1;
for (i = 0; i < h->nal_length_size; i++)
nalsize = (nalsize << 8) | buf[(*buf_index)++];
nalsize = ((unsigned)nalsize << 8) | buf[(*buf_index)++];
if (nalsize <= 0 || nalsize > buf_size - *buf_index) {
av_log(h->avctx, AV_LOG_ERROR,
"AVC: nal size %d\n", nalsize);