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avcodec/h264dec: Fix potential array overread 

add padding before scantable arrays

See: 522d850e68

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 380b48fb9f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-10-21 18:04:44 +02:00
parent 27f8d38682
commit d2f929357d
1 changed files with 1 additions and 0 deletions
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libavcodec/h264.h
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@ -521,6 +521,7 @@ typedef struct H264Context {
uint8_t *direct_table;
uint8_t direct_cache[5 * 8];
uint8_t scan_padding[16];
uint8_t zigzag_scan[16];
uint8_t zigzag_scan8x8[64];
uint8_t zigzag_scan8x8_cavlc[64];