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-rw-r--r--sql-common/my_user.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/sql-common/my_user.c b/sql-common/my_user.c
index 16a544387ee..d6f2818ad77 100644
--- a/sql-common/my_user.c
+++ b/sql-common/my_user.c
@@ -15,7 +15,7 @@
#include <my_user.h>
#include <m_string.h>
-
+#include <mysql_com.h>
/*
Parse user value to user name and host name parts.
@@ -47,6 +47,12 @@ void parse_user(const char *user_id_str, size_t user_id_len,
*user_name_len= p - user_id_str;
*host_name_len= user_id_len - *user_name_len - 1;
+ if (*user_name_len > USERNAME_LENGTH)
+ *user_name_len= USERNAME_LENGTH;
+
+ if (*host_name_len > HOSTNAME_LENGTH)
+ *host_name_len= HOSTNAME_LENGTH;
+
memcpy(user_name_str, user_id_str, *user_name_len);
memcpy(host_name_str, p + 1, *host_name_len);
}