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avcodec/m101: Fix off be 2 error

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Fixes: out of array read
Fixes: 15263/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_M101_fuzzer-5728999453491200

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 89b96900fa)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-06-17 21:13:17 +02:00
parent d84f4c0c25
commit 80bbb8b851
1 changed files with 1 additions and 1 deletions
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2
libavcodec/m101.c
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@ -61,7 +61,7 @@ static int m101_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
stride = AV_RL32(avctx->extradata + 5*4);
if (avctx->pix_fmt == AV_PIX_FMT_YUV422P10)
min_stride = (avctx->width + 15) / 16 * 20;
min_stride = (avctx->width + 15) / 16 * 40;
if (stride < min_stride || avpkt->size < stride * (uint64_t)avctx->height) {
av_log(avctx, AV_LOG_ERROR, "stride (%d) is invalid for packet sized %d\n",