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avcodec/bitstream: check codes in ff_init_vlc_sparse()

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-04-18 02:52:41 +02:00
parent fb3e3808ae
commit 6998af4a40
1 changed files with 4 additions and 0 deletions
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4
libavcodec/bitstream.c
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@ -310,6 +310,10 @@ int ff_init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes,
return -1;\
}\
GET_DATA(buf[j].code, codes, i, codes_wrap, codes_size);\
if (buf[j].code >= (1LL<<buf[j].bits)) {\
av_log(NULL, AV_LOG_ERROR, "Invalid code in init_vlc\n");\
return -1;\
}\
if (flags & INIT_VLC_LE)\
buf[j].code = bitswap_32(buf[j].code);\
else\