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avcodec/ffv1dec: Check quant table symbols more completely 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-05-04 13:25:31 +02:00
parent eb9fb508b0
commit 3dfbdb328e
1 changed files with 1 additions and 1 deletions
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2
libavcodec/ffv1dec.c
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@ -476,7 +476,7 @@ static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
for (v = 0; i < 128; v++) {
unsigned len = get_symbol(c, state, 0) + 1;
if (len > 128 - i)
if (len > 128 - i || !len)
return AVERROR_INVALIDDATA;
while (len--) {