WORD32 ih264d_update_qp(dec_struct_t * ps_dec, const WORD8 i1_qp)
{
    WORD32 i_temp;
    i_temp = (ps_dec->u1_qp + i1_qp + 52) % 52;

 if((i_temp < 0) || (i_temp > 51) || (i1_qp < -26) || (i1_qp > 25))
 return ERROR_INV_RANGE_QP_T;

    ps_dec->u1_qp = i_temp;
    ps_dec->u1_qp_y_rem6 = ps_dec->u1_qp % 6;
    ps_dec->u1_qp_y_div6 = ps_dec->u1_qp / 6;
    i_temp = CLIP3(0, 51, ps_dec->u1_qp + ps_dec->ps_cur_pps->i1_chroma_qp_index_offset);
    ps_dec->u1_qp_u_rem6 = MOD(gau1_ih264d_qp_scale_cr[12 + i_temp], 6);
    ps_dec->u1_qp_u_div6 = DIV(gau1_ih264d_qp_scale_cr[12 + i_temp], 6);

    i_temp = CLIP3(0, 51, ps_dec->u1_qp + ps_dec->ps_cur_pps->i1_second_chroma_qp_index_offset);
    ps_dec->u1_qp_v_rem6 = MOD(gau1_ih264d_qp_scale_cr[12 + i_temp], 6);
    ps_dec->u1_qp_v_div6 = DIV(gau1_ih264d_qp_scale_cr[12 + i_temp], 6);

    ps_dec->pu2_quant_scale_y =
                    gau2_ih264_iquant_scale_4x4[ps_dec->u1_qp_y_rem6];
    ps_dec->pu2_quant_scale_u =
                    gau2_ih264_iquant_scale_4x4[ps_dec->u1_qp_u_rem6];
    ps_dec->pu2_quant_scale_v =
                    gau2_ih264_iquant_scale_4x4[ps_dec->u1_qp_v_rem6];
 return OK;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.