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avcodec/mjpegdec: check that component linesize is always valid

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This commit is contained in:
Paul B Mahol 2022-12-08 23:49:33 +01:00
parent a9d15d43eb
commit 55753fc712
1 changed files with 1 additions and 1 deletions
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libavcodec/mjpegdec.c
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@ -1512,7 +1512,7 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah,
"error y=%d x=%d\n", mb_y, mb_x); "error y=%d x=%d\n", mb_y, mb_x);
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
if (ptr) { if (ptr && linesize[c]) {
s->idsp.idct_put(ptr, linesize[c], s->block); s->idsp.idct_put(ptr, linesize[c], s->block);
if (s->bits & 7) if (s->bits & 7)
shift_output(s, ptr, linesize[c]); shift_output(s, ptr, linesize[c]);