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Code Issues Releases Activity

avcodec/ffv1dec: Fix AC_GOLOMB_RICE min size check

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Found-by: mkver

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2022-07-21 00:20:41 +02:00
parent 15785e044e
commit f7d510b33f
1 changed files with 6 additions and 2 deletions
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8
libavcodec/ffv1dec.c
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@ -884,9 +884,13 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *rframe,
return AVERROR_INVALIDDATA;
} else {
int w = avctx->width;
for (int i = 0; w > (1<<ff_log2_run[i]); i++)
int s = 1 + w / (1<<23);
w /= s;
for (i = 0; w > (1<<ff_log2_run[i]); i++)
w -= ff_log2_run[i];
if (buf_size < (avctx->height + i + 6)/ 8)
if (buf_size < (avctx->height + i + 6) / 8 * s)
return AVERROR_INVALIDDATA;
}