diff --git a/lib_dec/ivas_mc_paramupmix_dec.c b/lib_dec/ivas_mc_paramupmix_dec.c
index 12fbda0d4d8fea87f6130a587ba1c18eff5ae110..fe17075e18acc11473669bc496fb77b2360ba4dc 100644
--- a/lib_dec/ivas_mc_paramupmix_dec.c
+++ b/lib_dec/ivas_mc_paramupmix_dec.c
@@ -662,8 +662,13 @@ static void ivas_mc_paramupmix_dec_sf(
     int16_t noparamupmix_delay, n_samples_rendered;
     MC_PARAMUPMIX_DEC_HANDLE hMCParamUpmix;
     int16_t subframeIdx, idx_in, maxBand;
+#ifdef MSAN_FIX
+    Word32 Cldfb_RealBuffer_subfr_fx[MAX_INTERN_CHANNELS][MAX_PARAM_SPATIAL_SUBFRAMES][CLDFB_NO_CHANNELS_MAX] = { 0 };
+    Word32 Cldfb_ImagBuffer_subfr_fx[MAX_INTERN_CHANNELS][MAX_PARAM_SPATIAL_SUBFRAMES][CLDFB_NO_CHANNELS_MAX] = { 0 };
+#else
     Word32 Cldfb_RealBuffer_subfr_fx[MAX_INTERN_CHANNELS][MAX_PARAM_SPATIAL_SUBFRAMES][CLDFB_NO_CHANNELS_MAX];
     Word32 Cldfb_ImagBuffer_subfr_fx[MAX_INTERN_CHANNELS][MAX_PARAM_SPATIAL_SUBFRAMES][CLDFB_NO_CHANNELS_MAX];
+#endif // MSAN_FIX
     Word32 Cldfb_RealBuffer_Binaural_fx[BINAURAL_CHANNELS][MAX_PARAM_SPATIAL_SUBFRAMES][CLDFB_NO_CHANNELS_MAX];
     Word32 Cldfb_ImagBuffer_Binaural_fx[BINAURAL_CHANNELS][MAX_PARAM_SPATIAL_SUBFRAMES][CLDFB_NO_CHANNELS_MAX];
 
diff --git a/lib_dec/ivas_mdct_core_dec.c b/lib_dec/ivas_mdct_core_dec.c
index 732bca24d5dd92d254f5fe98473930b4c54168c6..865381ef1e33d324022f388a87e2f32dd69aa6aa 100644
--- a/lib_dec/ivas_mdct_core_dec.c
+++ b/lib_dec/ivas_mdct_core_dec.c
@@ -936,6 +936,10 @@ void ivas_mdct_core_invQ_fx(
     {
         spectralData_tmp[k] = malloc( N_MAX * sizeof( Word32 ) );
     }
+#ifdef MSAN_FIX
+    set32_fx( spectralData_tmp[0], 0, L_FRAME_MAX );
+    set32_fx( spectralData_tmp[1], 0, L_FRAME_MAX );
+#endif // MSAN_FIX
 
     push_wmops( "mdct_core_invQ" );
     sts = hCPE->hCoreCoder;
@@ -976,8 +980,13 @@ void ivas_mdct_core_invQ_fx(
 
         common_exp = s_max( sts[0]->hTonalMDCTConc->lastBlockData.spectralData_exp, sts[1]->hTonalMDCTConc->lastBlockData.spectralData_exp );
 
+#ifdef MSAN_FIX
+        Copy_Scale_sig_16_32( sts[0]->hTonalMDCTConc->lastBlockData.spectralData, spectralData_tmp[0], L_frameTCX[0], 15 - ( common_exp - sts[0]->hTonalMDCTConc->lastBlockData.spectralData_exp ) ); // 30 - spectral_exp1
+        Copy_Scale_sig_16_32( sts[1]->hTonalMDCTConc->lastBlockData.spectralData, spectralData_tmp[1], L_frameTCX[1], 15 - ( common_exp - sts[1]->hTonalMDCTConc->lastBlockData.spectralData_exp ) ); // 30 - spectral_exp2
+#else
         Copy_Scale_sig_16_32( sts[0]->hTonalMDCTConc->lastBlockData.spectralData, spectralData_tmp[0], L_FRAME_MAX, 15 - ( common_exp - sts[0]->hTonalMDCTConc->lastBlockData.spectralData_exp ) ); // 30 - spectral_exp1
         Copy_Scale_sig_16_32( sts[1]->hTonalMDCTConc->lastBlockData.spectralData, spectralData_tmp[1], L_FRAME_MAX, 15 - ( common_exp - sts[1]->hTonalMDCTConc->lastBlockData.spectralData_exp ) ); // 30 - spectral_exp2
+#endif // MSAN_FIX
 
         sts[0]->hTonalMDCTConc->lastBlockData.spectralData_exp = sts[1]->hTonalMDCTConc->lastBlockData.spectralData_exp = common_exp;
         move16();
diff --git a/lib_dec/ivas_stereo_dft_dec_fx.c b/lib_dec/ivas_stereo_dft_dec_fx.c
index de55c77bd1980dbbaef9f62947f6c2a8c512c984..95f6d119bc0c0f553e9fa6e52d9fbd4ed998e1a3 100644
--- a/lib_dec/ivas_stereo_dft_dec_fx.c
+++ b/lib_dec/ivas_stereo_dft_dec_fx.c
@@ -399,6 +399,9 @@ ivas_error stereo_dft_dec_create_fx(
     {
         return ( IVAS_ERROR( IVAS_ERR_FAILED_ALLOC, "Can not allocate memory for TCX-LTP handle\n" ) );
     }
+#ifdef MSAN_FIX
+    set_zero_fx( hStereoDft_loc->hb_nrg_subr_fx, STEREO_DFT_NBDIV );/*Setting hb_nrg_subr_fx to zero*/
+#endif // MSAN_FIX
 
     hStereoDft_loc->hConfig->force_mono_transmission = 0;
     move16();
diff --git a/lib_dec/ivas_tcx_core_dec.c b/lib_dec/ivas_tcx_core_dec.c
index a7eccb6c788b11ac52cac58efd9ce560464ad3c1..761c7c94b597455cac99bb4d6d8cb32428c97170 100644
--- a/lib_dec/ivas_tcx_core_dec.c
+++ b/lib_dec/ivas_tcx_core_dec.c
@@ -770,14 +770,20 @@ void stereo_tcx_core_dec_fx(
     st->last_is_cng = 0;
 
     /* Postfiltering */
+#ifndef MSAN_FIX
     IF( st->p_bpf_noise_buf_32 )
     {
         Copy_Scale_sig_32_16( st->p_bpf_noise_buf_32, st->p_bpf_noise_buf, st->L_frame, negate( Q11 ) );
     }
+#endif
 
     post_decoder( st, synth_buf_fx, pit_gain_fx, pitch, signal_out_fx, st->p_bpf_noise_buf );
 
+#ifdef MSAN_FIX
+    IF( st->p_bpf_noise_buf_32 && st->tcxonly == 0)
+#else
     IF( st->p_bpf_noise_buf_32 )
+#endif // MSAN_FIX
     {
         Copy_Scale_sig_16_32_no_sat( st->p_bpf_noise_buf, st->p_bpf_noise_buf_32, st->L_frame, Q11 );
     }
diff --git a/lib_dec/tonalMDCTconcealment_fx.c b/lib_dec/tonalMDCTconcealment_fx.c
index 8ec2abe0509bd88b03d417162f0358b26bf21f55..640e19ee72e245951b064ea214414e9b6c566d9f 100644
--- a/lib_dec/tonalMDCTconcealment_fx.c
+++ b/lib_dec/tonalMDCTconcealment_fx.c
@@ -721,7 +721,11 @@ static void ivas_CalcPowerSpecAndDetectTonalComponents_fx(
     Word16 nSamples;
     Word16 i;
     Word16 floorPowerSpectrum; /* Minimum significant value of a spectral line in the power spectrum */
+#ifdef MSAN_FIX
+    Word32 powerSpectrum[L_FRAME_MAX] = { 0 };
+#else
     Word32 powerSpectrum[L_FRAME_MAX];
+#endif
     Word16 invScaleFactors[FDNS_NPTS];
     Word16 invScaleFactors_exp[FDNS_NPTS];
     Word16 powerSpectrum_exp, tmp_exp, old_exp;