diff --git a/test/cmocka/src/math/auditory/auditory.c b/test/cmocka/src/math/auditory/auditory.c
index 1e3e903fb5fb..733fa0caa6e6 100644
--- a/test/cmocka/src/math/auditory/auditory.c
+++ b/test/cmocka/src/math/auditory/auditory.c
@@ -126,6 +126,10 @@ static void filterbank_16_test(const int16_t *fft_real, const int16_t *fft_imag,
 	fclose(fh);
 #endif
 
+	free(fb.data);
+	free(mel_log);
+	free(fft_out);
+	free(fft_buf);
 	assert_true(error_rms < MEL_FB16_MAX_ERROR_RMS);
 	assert_true(delta_max < MEL_FB16_MAX_ERROR_ABS);
 	return;
@@ -229,6 +233,10 @@ static void filterbank_32_test(const int32_t *fft_real, const int32_t *fft_imag,
 	fclose(fh);
 #endif
 
+	free(fb.data);
+	free(mel_log);
+	free(fft_out);
+	free(fft_buf);
 	assert_true(error_rms < MEL_FB32_MAX_ERROR_RMS);
 	assert_true(delta_max < MEL_FB32_MAX_ERROR_ABS);
 	return;
diff --git a/test/cmocka/src/math/dct/dct.c b/test/cmocka/src/math/dct/dct.c
index 4cfe38ef803b..bd2ec92a0821 100644
--- a/test/cmocka/src/math/dct/dct.c
+++ b/test/cmocka/src/math/dct/dct.c
@@ -67,6 +67,7 @@ static void dct_matrix_16_test(const int16_t *ref, int num_in, int num_out,
 	printf("Max absolute error = %5.2f (max %5.2f), error RMS = %5.2f (max %5.2f)\n",
 	       delta_max, MATRIX_MULT_16_MAX_ERROR_ABS, error_rms, MATRIX_MULT_16_MAX_ERROR_RMS);
 
+	free(dct.matrix);
 	assert_true(error_rms < MATRIX_MULT_16_MAX_ERROR_RMS);
 	assert_true(delta_max < MATRIX_MULT_16_MAX_ERROR_ABS);
 }
diff --git a/test/cmocka/src/math/fft/fft.c b/test/cmocka/src/math/fft/fft.c
index 7c3279c96b57..d1df474f9f61 100644
--- a/test/cmocka/src/math/fft/fft.c
+++ b/test/cmocka/src/math/fft/fft.c
@@ -299,6 +299,9 @@ static void test_math_fft_256(void **state)
 	noise += integrate_power_32(out, i + 2, fft_size / 2 - 1);
 	snr = 10 * log10(signal / noise);
 	printf("%s: SNR %5.2f dB\n", __func__, snr);
+
+	buffer_free(sink);
+	buffer_free(source);
 	assert_int_equal(snr < MIN_SNR_256, 0);
 }
 
@@ -341,6 +344,9 @@ static void test_math_fft_512(void **state)
 	noise += integrate_power_32(out, i + 2, fft_size / 2 - 1);
 	snr = 10 * log10(signal / noise);
 	printf("%s: SNR %5.2f dB\n", __func__, snr);
+
+	buffer_free(sink);
+	buffer_free(source);
 	assert_int_equal(snr < MIN_SNR_512, 0);
 }
 
@@ -383,6 +389,9 @@ static void test_math_fft_1024(void **state)
 	noise += integrate_power_32(out, i + 2, fft_size / 2 - 1);
 	snr = 10 * log10(signal / noise);
 	printf("%s: SNR %5.2f dB\n", __func__, snr);
+
+	buffer_free(sink);
+	buffer_free(source);
 	assert_int_equal(snr < MIN_SNR_1024, 0);
 }
 
@@ -424,6 +433,10 @@ static void test_math_fft_1024_ifft(void **state)
 
 	db = 10 * log10((float)signal / noise);
 	printf("%s: SNR: %6.2f dB\n", __func__, db);
+
+	buffer_free(sink);
+	buffer_free(intm);
+	buffer_free(source);
 	assert_int_equal(db < FFT_DB_TH, 0);
 }
 
@@ -465,6 +478,10 @@ static void test_math_fft_512_2ch(void **state)
 	i = (SINE_HZ * fft_size) / 48000;
 	printf("%s: peak for channel 1 at point %d\n", __func__, r);
 
+	buffer_free(sink2);
+	buffer_free(sink1);
+	buffer_free(source);
+
 	/* the peak should be in range i +/-1 */
 	assert_in_range(r, i - 1, i + 1);
 }
@@ -659,6 +676,9 @@ static void test_math_fft_256_16(void **state)
 	noise += integrate_power_16(out, i + 2, fft_size / 2 - 1);
 	snr = 10 * log10(signal / noise);
 	printf("%s: SNR %5.2f dB\n", __func__, snr);
+
+	buffer_free(sink);
+	buffer_free(source);
 	assert_int_equal(snr < MIN_SNR_256_16, 0);
 }
 
@@ -701,6 +721,9 @@ static void test_math_fft_512_16(void **state)
 	noise += integrate_power_16(out, i + 2, fft_size / 2 - 1);
 	snr = 10 * log10(signal / noise);
 	printf("%s: SNR %5.2f dB\n", __func__, snr);
+
+	buffer_free(sink);
+	buffer_free(source);
 	assert_int_equal(snr < MIN_SNR_512_16, 0);
 }
 
@@ -743,6 +766,9 @@ static void test_math_fft_1024_16(void **state)
 	noise += integrate_power_16(out, i + 2, fft_size / 2 - 1);
 	snr = 10 * log10(signal / noise);
 	printf("%s: SNR %5.2f dB\n", __func__, snr);
+
+	buffer_free(sink);
+	buffer_free(source);
 	assert_int_equal(snr < MIN_SNR_1024_16, 0);
 }
 
@@ -783,6 +809,10 @@ static void test_math_fft_1024_ifft_16(void **state)
 
 	db = 10 * log10((float)signal / noise);
 	printf("%s: SNR: %6.2f dB\n", __func__, db);
+
+	buffer_free(sink);
+	buffer_free(intm);
+	buffer_free(source);
 	assert_int_equal(db < FFT_DB_TH_16, 0);
 }
 
diff --git a/test/cmocka/src/math/matrix/matrix.c b/test/cmocka/src/math/matrix/matrix.c
index 66200bc3e632..3934ee2064a5 100644
--- a/test/cmocka/src/math/matrix/matrix.c
+++ b/test/cmocka/src/math/matrix/matrix.c
@@ -81,6 +81,9 @@ static void matrix_mult_16_test(const int16_t *a_ref, const int16_t *b_ref, cons
 	printf("Max absolute error = %5.2f (max %5.2f), error RMS = %5.2f (max %5.2f)\n",
 	       delta_max, MATRIX_MULT_16_MAX_ERROR_ABS, error_rms, MATRIX_MULT_16_MAX_ERROR_RMS);
 
+	free(c_matrix);
+	free(b_matrix);
+	free(a_matrix);
 	assert_true(error_rms < MATRIX_MULT_16_MAX_ERROR_RMS);
 	assert_true(delta_max < MATRIX_MULT_16_MAX_ERROR_ABS);
 }