diff --git a/packages/sysutils/busybox/patches/busybox-1.20.2-999-cifs-bug.patch b/packages/sysutils/busybox/patches/busybox-1.20.2-999-cifs-bug.patch
new file mode 100644
index 0000000000..2a5398b9d3
--- /dev/null
+++ b/packages/sysutils/busybox/patches/busybox-1.20.2-999-cifs-bug.patch
@@ -0,0 +1,28 @@
+diff -Naur busybox-1.20.2/util-linux/mount.c busybox-1.20.2.patch/util-linux/mount.c
+--- busybox-1.20.2/util-linux/mount.c	2012-07-02 16:08:25.000000000 +0200
++++ busybox-1.20.2.patch/util-linux/mount.c	2012-11-14 00:04:29.305472692 +0100
+@@ -1804,7 +1804,7 @@
+ 		int len;
+ 		char c;
+ 		len_and_sockaddr *lsa;
+-		char *hostname, *dotted, *ip;
++		char *hostname, *dotted, *ip, *share, *unc;
+ 
+ 		hostname = mp->mnt_fsname + 2;
+ 		len = strcspn(hostname, "/\\");
+@@ -1812,6 +1812,15 @@
+ 			goto report_error;
+ 		c = hostname[len];
+ 		hostname[len] = '\0';
++
++		share = hostname + len + 1;
++		if (share[0] == '\0')
++			goto report_error;
++		// Insert "unc=\\hostname\share" option into options
++		unc = xasprintf("unc=\\\\%s\\%s", hostname, share);
++		parse_mount_options(unc, &filteropts);
++		if (ENABLE_FEATURE_CLEAN_UP) free(unc);
++
+ 		lsa = host2sockaddr(hostname, 0);
+ 		hostname[len] = c;
+ 		if (!lsa)