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smc: Fix overread.

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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 2012-03-05 03:43:15 +01:00
parent 263bb6edcf
commit 1007a805a4
1 changed files with 1 additions and 1 deletions
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libavcodec/smc.c
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@ -313,7 +313,7 @@ static void smc_decode_stream(SmcContext *s)
} else } else
color_table_index = CQUAD * s->buf[stream_ptr++]; color_table_index = CQUAD * s->buf[stream_ptr++];
while (n_blocks--) { while (n_blocks-- && stream_ptr + 3 < s->size) {
color_flags = AV_RB32(&s->buf[stream_ptr]); color_flags = AV_RB32(&s->buf[stream_ptr]);
stream_ptr += 4; stream_ptr += 4;
/* flag mask actually acts as a bit shift count here */ /* flag mask actually acts as a bit shift count here */