diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index bbfc0b75..01cf2486 100644
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -1730,9 +1730,11 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u
       //memcpy(uid_resp, uid_resp + 1, 3);
       // But memcpy should not be used for overlapping arrays, 
       // and memmove appears to not be available in the arm build. 
-      // So this has been replaced with a for-loop:
-      for(int xx = 0; xx < 3; xx++) uid_resp[xx] = uid_resp[xx+1];
-
+      // Therefore:
+      uid_resp[0] = uid_resp[1];
+      uid_resp[1] = uid_resp[2];
+      uid_resp[2] = uid_resp[3]; 
+ 
       uid_resp_len = 3;
     }
 
@@ -1939,7 +1941,7 @@ void ReaderMifare(bool first_try)
 	//byte_t par_mask = 0xff;
 	static byte_t par_low = 0;
 	bool led_on = TRUE;
-	uint8_t uid[10];
+	uint8_t uid[10]  ={0};
 	uint32_t cuid;
 
 	uint32_t nt =0 ;
diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index 80d93a46..bdb0e7e7 100644
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -667,12 +667,15 @@ int CmdHF14AMfRestore(const char *Cmd)
 	}
 	if ((fkeys = fopen("dumpkeys.bin","rb")) == NULL) {
 		PrintAndLog("Could not find file dumpkeys.bin");
+		fclose(fdump);
 		return 1;
 	}
 	
 	for (sectorNo = 0; sectorNo < numSectors; sectorNo++) {
 		if (fread(keyA[sectorNo], 1, 6, fkeys) == 0) {
 			PrintAndLog("File reading error (dumpkeys.bin).");
+			fclose(fdump);
+			fclose(fkeys);
 			return 2;
 		}
 	}
@@ -680,9 +683,12 @@ int CmdHF14AMfRestore(const char *Cmd)
 	for (sectorNo = 0; sectorNo < numSectors; sectorNo++) {
 		if (fread(keyB[sectorNo], 1, 6, fkeys) == 0) {
 			PrintAndLog("File reading error (dumpkeys.bin).");
+			fclose(fdump);
+			fclose(fkeys);
 			return 2;
 		}
 	}
+	fclose(fkeys);
 
 	PrintAndLog("Restoring dumpdata.bin to card");
 
@@ -693,6 +699,7 @@ int CmdHF14AMfRestore(const char *Cmd)
 			
 			if (fread(bldata, 1, 16, fdump) == 0) {
 				PrintAndLog("File reading error (dumpdata.bin).");
+				fclose(fdump);
 				return 2;
 			}
 					
@@ -727,7 +734,6 @@ int CmdHF14AMfRestore(const char *Cmd)
 	}
 	
 	fclose(fdump);
-	fclose(fkeys);
 	return 0;
 }
 
diff --git a/client/loclass/cipherutils.c b/client/loclass/cipherutils.c
index 1e08cf10..e11e8d22 100644
--- a/client/loclass/cipherutils.c
+++ b/client/loclass/cipherutils.c
@@ -192,6 +192,7 @@ void printarr_human_readable(char * title, uint8_t* arr, int len)
 		cx += snprintf(output+cx,outsize-cx, "%02x ",*(arr+i));
 	}
 	prnlog(output);
+	free(output);
 }
 
 //-----------------------------
diff --git a/client/loclass/fileutils.c b/client/loclass/fileutils.c
index 2f7b6b65..8c08c9ee 100644
--- a/client/loclass/fileutils.c
+++ b/client/loclass/fileutils.c
@@ -35,6 +35,7 @@ int saveFile(const char *preferredName, const char *suffix, const void* data, si
 	FILE *fileHandle=fopen(fileName,"wb");
 	if(!fileHandle) {
 		prnlog("Failed to write to file '%s'", fileName);
+		free(fileName);
 		return 1;
 	}
 	fwrite(data, 1,	datalen, fileHandle);
diff --git a/client/mifarehost.c b/client/mifarehost.c
index 72e70662..2a1f8a48 100644
--- a/client/mifarehost.c
+++ b/client/mifarehost.c
@@ -350,13 +350,15 @@ int loadTraceCard(uint8_t *tuid) {
 	while(!feof(f)){
 		memset(buf, 0, sizeof(buf));
 		if (fgets(buf, sizeof(buf), f) == NULL) {
-      PrintAndLog("File reading error.");
+			PrintAndLog("File reading error.");
+			fclose(f);
 			return 2;
-    }
+    	}
 
 		if (strlen(buf) < 32){
 			if (feof(f)) break;
 			PrintAndLog("File content error. Block data must include 32 HEX symbols");
+			fclose(f);
 			return 2;
 		}
 		for (i = 0; i < 32; i += 2)
diff --git a/client/uart.c b/client/uart.c
index f7c5e35c..4b2fee99 100644
--- a/client/uart.c
+++ b/client/uart.c
@@ -73,6 +73,7 @@ serial_port uart_open(const char* pcPortName)
   // Does the system allows us to place a lock on this file descriptor
   if (fcntl(sp->fd, F_SETLK, &fl) == -1) {
     // A conflicting lock is held by another process
+    free(sp);
     return CLAIMED_SERIAL_PORT;
   }