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avcodec/mjpegdec: Clear palette to avoid uninitialized entries

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Suggested-by: James
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-05-03 21:03:07 +02:00
parent 7f6ada4eea
commit c83f60d7d7
1 changed files with 4 additions and 0 deletions
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4
libavcodec/mjpegdec.c
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@ -730,6 +730,10 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
s->picture_ptr->key_frame = 1;
s->got_picture = 1;
// Lets clear the palette to avoid leaving uninitialized values in it
if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
memset(s->picture_ptr->data[1], 0, 1024);
for (i = 0; i < 4; i++)
s->linesize[i] = s->picture_ptr->linesize[i] << s->interlaced;