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cinepak: Fix invalid read access on extra data
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
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@ -336,7 +336,8 @@ static int cinepak_decode (CinepakContext *s)
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* If the frame header is followed by the bytes FE 00 00 06 00 00 then
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* this is probably one of the two known files that have 6 extra bytes
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* after the frame header. Else, assume 2 extra bytes. */
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if ((s->data[10] == 0xFE) &&
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if (s->size >= 16 &&
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(s->data[10] == 0xFE) &&
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(s->data[11] == 0x00) &&
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(s->data[12] == 0x00) &&
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(s->data[13] == 0x06) &&
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