diff --git a/lib_com/lerp.c b/lib_com/lerp.c
index b559650fc8914d9a4d2500d81bf1174468a0b3b4..ac11a17ce5c82216f899563d3c0bc8b253df2451 100644
--- a/lib_com/lerp.c
+++ b/lib_com/lerp.c
@@ -495,8 +495,10 @@ void L_lerp_fx( Word32 *f, Word32 *f_out, Word16 bufferNewSize, Word16 bufferOld
         *q -= guard_bits;
         FOR( Word16 ind = 0; ind < bufferNewSize; ind++ )
         f[ind] = L_shr( f[ind], guard_bits );
+#ifndef MSAN_FIX
         FOR( Word16 ind = 0; ind < bufferNewSize; ind++ )
         f_out[ind] = L_shr( f_out[ind], guard_bits );
+#endif
     }
 
     IF( 128 * bufferNewSize > bufferOldSize * 507 )
diff --git a/lib_dec/fd_cng_dec_fx.c b/lib_dec/fd_cng_dec_fx.c
index cdbf98f5588e11122acf1294c2ca59c60cfed657..4c0e5b1d71a3c5383b5413555f2dce1845e0699c 100644
--- a/lib_dec/fd_cng_dec_fx.c
+++ b/lib_dec/fd_cng_dec_fx.c
@@ -181,6 +181,9 @@ void initFdCngDec_ivas_fx(
     st->CNG_mode = -1;
     move16();
     Copy( st->lsp_old_fx, st->lspCNG_fx, M );
+#ifdef MSAN_FIX
+    hFdCngDec->hFdCngCom->sid_frame_counter = 0;
+#endif
     return;
 }
 
diff --git a/lib_dec/ivas_stereo_cng_dec.c b/lib_dec/ivas_stereo_cng_dec.c
index 54d67d007c634621e9c23f965d9c67df4d4c5d98..0c08c549fe6253ccbe0bfcdbb580a087fe975178 100644
--- a/lib_dec/ivas_stereo_cng_dec.c
+++ b/lib_dec/ivas_stereo_cng_dec.c
@@ -952,7 +952,7 @@ static void stereo_dft_generate_comfort_noise_fx(
             ptr0 = shb_shape;
             ptr1 = ptr0 + 2;
             ptr2 = ptr1 + 1;
-            set16_fx( e_norm_temp, q_shb_shape, st->L_frame );
+            set16_fx( e_norm_temp, q_shb_shape, L_FRAME16k );
 
             FOR( i = 0; i < L_FRAME16k / 2 - 1; i++ )
             {