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avcodec/hevc_ps: Check diff_cu_qp_delta_depth
Fixes undefined behavior Fixes: asan_static-oob_17aa046_582_cov_1577759978_DBLK_G_VIXS_1.bit Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -1255,6 +1255,14 @@ int ff_hevc_decode_nal_pps(HEVCContext *s)
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if (pps->cu_qp_delta_enabled_flag)
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pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);
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if (pps->diff_cu_qp_delta_depth < 0 ||
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pps->diff_cu_qp_delta_depth > sps->log2_diff_max_min_coding_block_size) {
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av_log(s->avctx, AV_LOG_ERROR, "diff_cu_qp_delta_depth %d is invalid\n",
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pps->diff_cu_qp_delta_depth);
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ret = AVERROR_INVALIDDATA;
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goto err;
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}
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pps->cb_qp_offset = get_se_golomb(gb);
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if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {
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av_log(s->avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",
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