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avcodec/y41pdec: Fix width in input buffer size check

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Fixes: out of array read
Fixes: 1437/clusterfuzz-testcase-minimized-4569970002362368

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 3d8d3729475c7dce52d8fb9ffb280fd2ea62e1a2)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-10 14:33:27 +02:00
parent 4dacf6bc4a
commit a98d82b13d
1 changed files with 1 additions and 1 deletions
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libavcodec/y41pdec.c
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@ -43,7 +43,7 @@ static int y41p_decode_frame(AVCodecContext *avctx, void *data,
uint8_t *y, *u, *v; uint8_t *y, *u, *v;
int i, j, ret; int i, j, ret;
if (avpkt->size < 3LL * avctx->height * avctx->width / 2) { if (avpkt->size < 3LL * avctx->height * FFALIGN(avctx->width, 8) / 2) {
av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
return AVERROR(EINVAL); return AVERROR(EINVAL);
} }