generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

jpeg2000: Check component number in get_coc() and get_qcc()

Browse Source 
Avoid overreads.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Nicolas Bertrand <nicoinattendu@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Michael Niedermayer 2013-07-01 10:01:07 +02:00 committed by Luca Barbato
parent 17e5d614a8
commit eae63e3c15
1 changed files with 16 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
libavcodec/jpeg2000dec.c
View File

@ -362,6 +362,13 @@ static int get_coc(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c,
compno = bytestream2_get_byteu(&s->g);
if (compno >= s->ncomponents) {
av_log(s->avctx, AV_LOG_ERROR,
"Invalid compno %d. There are %d components in the image.\n",
compno, s->ncomponents);
return AVERROR_INVALIDDATA;
}
c += compno;
c->csty = bytestream2_get_byteu(&s->g);
get_cox(s, c);
@ -441,6 +448,14 @@ static int get_qcc(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q,
return AVERROR_INVALIDDATA;
compno = bytestream2_get_byteu(&s->g);
if (compno >= s->ncomponents) {
av_log(s->avctx, AV_LOG_ERROR,
"Invalid compno %d. There are %d components in the image.\n",
compno, s->ncomponents);
return AVERROR_INVALIDDATA;
}
properties[compno] |= HAD_QCC;
return get_qcx(s, n - 1, q + compno);
}