X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/bf32dd923f3fbbfaa0932390fb1a771d03d0cf45..2b9006bd143dd37ea79fb746196289b2a0843e8e:/client/cmdhficlass.c

diff --git a/client/cmdhficlass.c b/client/cmdhficlass.c
index f17f96ca..7f0779b6 100644
--- a/client/cmdhficlass.c
+++ b/client/cmdhficlass.c
@@ -1021,7 +1021,11 @@ int CmdHFiClassCloneTag(const char *Cmd) {
 	// else we have to create a share memory
 	int i;
 	fseek(f,startblock*8,SEEK_SET);
-	fread(tag_data,sizeof(iclass_block_t),endblock - startblock + 1,f);
+	if ( fread(tag_data,sizeof(iclass_block_t),endblock - startblock + 1,f) == 0){
+		PrintAndLog("File reading error.");
+		fclose(f);
+		return 2;
+	}
 
 	uint8_t MAC[4]={0x00,0x00,0x00,0x00};
 	uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};