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avcodec/h264dec: Fix potential array overread

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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 b51f515c5c
commit cbc839681b
1 changed files with 1 additions and 0 deletions
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libavcodec/h264dec.h
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@@ -422,6 +422,7 @@ typedef struct H264Context {
uint8_t (*mvd_table[2])[2]; uint8_t (*mvd_table[2])[2];
uint8_t *direct_table; uint8_t *direct_table;
uint8_t scan_padding[16];
uint8_t zigzag_scan[16]; uint8_t zigzag_scan[16];
uint8_t zigzag_scan8x8[64]; uint8_t zigzag_scan8x8[64];
uint8_t zigzag_scan8x8_cavlc[64]; uint8_t zigzag_scan8x8_cavlc[64];