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jpeg2000dec: Check compno in get_coc()
Fixes out of array accesses Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -354,6 +354,11 @@ static int get_coc(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c,
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compno = bytestream2_get_byteu(&s->g);
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if (compno >= s->ncomponents) {
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av_log(s->avctx, AV_LOG_ERROR, "Invalid compno %d\n", compno);
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return AVERROR_INVALIDDATA;
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}
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c += compno;
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c->csty = bytestream2_get_byteu(&s->g);
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