IMPEG2D_ERROR_CODES_T impeg2d_vld_inv_quant_mpeg1(
 void *pv_dec, /* Decoder State */
                             WORD16       *pi2_out_addr, /*!< Address where decoded symbols will be stored */
 const UWORD8 *pu1_scan, /*!< Scan table to be used */
                             UWORD16      u2_intra_flag, /*!< Intra Macroblock or not */
                             UWORD16      u2_colr_comp, /*!< 0 - Luma,1 - U comp, 2 - V comp */
                             UWORD16      u2_d_picture        /*!< D Picture or not */
 )
{
    UWORD8  *pu1_weighting_matrix;
 dec_state_t *ps_dec    = (dec_state_t *) pv_dec;
    IMPEG2D_ERROR_CODES_T e_error   = (IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE;

    WORD16  pi2_coeffs[NUM_COEFFS];
    UWORD8  pu1_pos[NUM_COEFFS];
    WORD32  i4_num_coeffs;

 /* Perform VLD on the stream to get the coefficients and their positions */
    e_error = impeg2d_vld_decode(ps_dec, pi2_coeffs, pu1_scan, pu1_pos, u2_intra_flag,
                                 u2_colr_comp, u2_d_picture, ps_dec->u2_intra_vlc_format,
                                 ps_dec->u2_is_mpeg2, &i4_num_coeffs);
 if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
 {
 return e_error;
 }

 /* For YUV420 format,Select the weighting matrix according to Table 7.5 */
    pu1_weighting_matrix = (u2_intra_flag == 1) ? ps_dec->au1_intra_quant_matrix:
                    ps_dec->au1_inter_quant_matrix;

    IMPEG2D_IQNT_INP_STATISTICS(pi2_out_addr, ps_dec->u4_non_zero_cols, ps_dec->u4_non_zero_rows);
 /* Inverse Quantize the Output of VLD */
    PROFILE_DISABLE_INVQUANT_IF0

 {
 /* Clear output matrix */
        PROFILE_DISABLE_MEMSET_RESBUF_IF0
 if (1 != (ps_dec->u4_non_zero_cols | ps_dec->u4_non_zero_rows))
 {
            ps_dec->pf_memset_16bit_8x8_linear_block (pi2_out_addr);
 }

        impeg2d_inv_quant_mpeg1(pi2_out_addr, pu1_weighting_matrix,
                                  ps_dec->u1_quant_scale, u2_intra_flag,
                                  i4_num_coeffs, pi2_coeffs, pu1_pos,
                                  pu1_scan, &ps_dec->u2_def_dc_pred[u2_colr_comp],
                                  ps_dec->u2_intra_dc_precision);

 if (0 != pi2_out_addr[0])
 {
 /* The first coeff might've become non-zero due to intra_dc_decision
             * value. So, check here after inverse quantization.
             */
            ps_dec->u4_non_zero_cols  |= 0x1;
            ps_dec->u4_non_zero_rows  |= 0x1;
 }
 }

 return e_error;
}

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.