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prevent access to vp8_coeff_band[16] 

Originally committed as revision 24656 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Pascal Massimino 2010-08-01 23:20:06 +00:00
parent 043076975f
commit c22b4468a6
1 changed files with 4 additions and 4 deletions
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8
libavcodec/vp8.c
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@ -822,11 +822,11 @@ static int decode_block_coeffs(VP56RangeCoder *c, DCTELEM block[16],
skip_eob:
if (!vp56_rac_get_prob_branchy(c, token_prob[1])) { // DCT_0
if (++i == 16)
return nonzero; // invalid input; blocks should end with EOB
zero_nhood = 0;
token_prob = probs[vp8_coeff_band[++i]][0];
if (i < 16)
goto skip_eob;
return nonzero; // invalid input; blocks should end with EOB
token_prob = probs[vp8_coeff_band[i]][0];
goto skip_eob;
}
if (!vp56_rac_get_prob_branchy(c, token_prob[2])) { // DCT_1