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h264_refs: validate the SPS pointer in ff_h264_execute_ref_pic_marking()

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Bug-Id: 1036
CC: libav-stable@libav.org
This commit is contained in:
Sean McGovern 2017-05-07 17:11:59 -04:00
parent cfd25488bf
commit cb167f2947
1 changed files with 7 additions and 0 deletions
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7
libavcodec/h264_refs.c
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@ -557,6 +557,12 @@ int ff_h264_execute_ref_pic_marking(H264Context *h)
int current_ref_assigned = 0, err = 0;
H264Picture *av_uninit(pic);
if (!h->ps.sps) {
av_log(h->avctx, AV_LOG_ERROR, "SPS is unset\n");
err = AVERROR_INVALIDDATA;
goto out;
}
if (!h->explicit_ref_marking)
generate_sliding_window_mmcos(h);
mmco_count = h->nb_mmco;
@ -725,6 +731,7 @@ int ff_h264_execute_ref_pic_marking(H264Context *h)
print_short_term(h);
print_long_term(h);
out:
return (h->avctx->err_recognition & AV_EF_EXPLODE) ? err : 0;
}