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qdm2: Check vlc_stage3_values index.

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-15 16:17:07 +02:00
parent cb8f5194b3
commit 1a974679d0
1 changed files with 8 additions and 1 deletions
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9
libavcodec/qdm2.c
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@ -343,7 +343,14 @@ static int qdm2_get_vlc (GetBitContext *gb, VLC *vlc, int flag, int depth)
/* stage-3, optional */
if (flag) {
int tmp = vlc_stage3_values[value];
int tmp;
if (value >= 60) {
av_log(0, AV_LOG_ERROR, "value %d in qdm2_get_vlc too large\n", value);
return 0;
}
tmp= vlc_stage3_values[value];
if ((value & ~3) > 0)
tmp += get_bits (gb, (value >> 2));