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avcodec/cfhd: Check destination space for bayer before writing

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Fixes: out of array write
Fixes: 16105/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-5690817309573120
Fixes: 16119/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-5099050675732480
Fixes: 16135/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-5705501601431552

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-08-04 12:03:35 +02:00
parent fe2e1cfc19
commit 58e084bd2c
1 changed files with 9 additions and 0 deletions
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9
libavcodec/cfhd.c
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@ -963,6 +963,15 @@ static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame,
}
low = s->plane[plane].l_h[6];
high = s->plane[plane].l_h[7];
if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
(lowpass_height * 2 > avctx->coded_height / 2 ||
lowpass_width * 2 > avctx->coded_width / 2 )
) {
ret = AVERROR_INVALIDDATA;
goto end;
}
for (i = 0; i < lowpass_height * 2; i++) {
if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
horiz_filter_clip_bayer(dst, low, high, lowpass_width, s->bpc);