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avcodec/h264dec: Fix potential array overread

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add padding before scantable arrays

See: 522d850e68ec4b77d3477b3c8f55b1ba00a9d69a

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 380b48fb9fdc7b0c40d67e026f9b3accb12794eb)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-10-21 18:04:44 +02:00
parent 6ccf19198b
commit d25736dc87
1 changed files with 1 additions and 0 deletions
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libavcodec/h264dec.h
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@ -416,6 +416,7 @@ typedef struct H264Context {
uint8_t (*mvd_table[2])[2];
uint8_t *direct_table;
uint8_t scan_padding[16];
uint8_t zigzag_scan[16];
uint8_t zigzag_scan8x8[64];
uint8_t zigzag_scan8x8_cavlc[64];