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mss2: do not try to read too many palette entries 

Reported by Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>
This commit is contained in:
Alberto Delmás 2012-09-03 17:28:01 +02:00 committed by Kostya Shishkov
parent 59383d5740
commit 6ceef07b21
1 changed files with 1 additions and 1 deletions
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2
libavcodec/mss2.c
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@ -161,7 +161,7 @@ static int decode_pal_v2(MSS12Context *ctx, const uint8_t *buf, int buf_size)
return 0;
ncol = *buf++;
if (buf_size < 2 + ncol * 3)
if (ncol > ctx->free_colours || buf_size < 2 + ncol * 3)
return -1;
for (i = 0; i < ncol; i++)
*pal++ = AV_RB24(buf + 3 * i);