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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-20 17:02:36 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-26 16:00:14 +0100 |
| commit | 80472438996ed1928b30f6ac4e0d17a492de2cdf (patch) | |
| tree | ad780b28cb6adf90a5d37322759b1c1e42e92346 /libavcodec | |
| parent | 28859d6e7cdbf0cc230cbf782f3895a9fa22616c (diff) | |
| download | ffmpeg-80472438996ed1928b30f6ac4e0d17a492de2cdf.tar.gz | |
avcodec/h264_slice: Check sps in h264_slice_header_init()
Fixes: null pointer dereference
Fixes: h264_slice_header_init.mp4
Found-by: Rafael Dutra <rafael.dutra@cispa.de>
Tested-by: Rafael Dutra <rafael.dutra@cispa.de>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/h264_slice.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c index 14b945756b..84b5710ab4 100644 --- a/libavcodec/h264_slice.c +++ b/libavcodec/h264_slice.c @@ -922,6 +922,11 @@ static int h264_slice_header_init(H264Context *h) const SPS *sps = h->ps.sps; int i, ret; + if (!sps) { + ret = AVERROR_INVALIDDATA; + goto fail; + } + ff_set_sar(h->avctx, sps->sar); av_pix_fmt_get_chroma_sub_sample(h->avctx->pix_fmt, &h->chroma_x_shift, &h->chroma_y_shift); |