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avcodec/mjpegdec: Disallow progressive bayer images

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Fixes: Null pointer dereference
Fixes: sample1.dng
Found-by: South East <8billion.people@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-11-18 23:55:05 +01:00
parent 84569b6c22
commit 6d8285633d
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1 changed files with 4 additions and 0 deletions
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4
libavcodec/mjpegdec.c
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@ -468,6 +468,10 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
if (s->avctx->height <= 0)
return AVERROR_INVALIDDATA;
}
if (s->bayer && s->progressive) {
avpriv_request_sample(s->avctx, "progressively coded bayer picture");
return AVERROR_INVALIDDATA;
}
if (s->got_picture && s->interlaced && (s->bottom_field == !s->interlace_polarity)) {
if (s->progressive) {