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huffyuvdec: check width size for yuv422p

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Avoid out of array accesses.

CC: libav-stable@libav.org
Bug-Id: CVE-2013-0848
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
(cherry picked from commit a7153444df)
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Conflicts:
	libavcodec/huffyuvdec.c
This commit is contained in:
Michael Niedermayer
2014-08-03 00:54:33 +01:00
committed by Anton Khirnov
parent e17dc0a254
commit a1804df66a
1 changed files with 7 additions and 0 deletions
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7
libavcodec/huffyuv.c
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@@ -538,6 +538,13 @@ s->bgr32=1;
return AVERROR_INVALIDDATA;
}
if (s->predictor == MEDIAN && avctx->pix_fmt == PIX_FMT_YUV422P &&
avctx->width % 4) {
av_log(avctx, AV_LOG_ERROR, "width must be multiple of 4 "
"for this combination of colorspace and predictor type.\n");
return AVERROR_INVALIDDATA;
}
alloc_temp(s);
// av_log(NULL, AV_LOG_DEBUG, "pred:%d bpp:%d hbpp:%d il:%d\n", s->predictor, s->bitstream_bpp, avctx->bits_per_coded_sample, s->interlaced);