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avcodec/mpeg12dec: Use 64bit in bit computation

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I dont think this can actually overflow but 64bit seems reasonable to use

Fixes: CID1521983 Unintentional integer overflow

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 4c725df059dd9a5f2071e204924105b3ceb74cbc)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-05-11 21:04:00 +02:00
parent c250e3b101
commit 39da4ac79b
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1 changed files with 1 additions and 1 deletions
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libavcodec/mpeg12dec.c
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@ -2733,7 +2733,7 @@ static int ipu_decode_frame(AVCodecContext *avctx, AVFrame *frame,
int ret;
// Check for minimal intra MB size (considering mb header, luma & chroma dc VLC, ac EOB VLC)
if (avpkt->size*8LL < (avctx->width+15)/16 * ((avctx->height+15)/16) * (2 + 3*4 + 2*2 + 2*6))
if (avpkt->size*8LL < (avctx->width+15)/16 * ((avctx->height+15)/16) * (2LL + 3*4 + 2*2 + 2*6))
return AVERROR_INVALIDDATA;
ret = ff_get_buffer(avctx, frame, 0);