1 files changed, 2 insertions, 0 deletions

diff --git a/src/lib/libc/net/res_query.c b/src/lib/libc/net/res_query.c
index 81c4d3194d..61b6cb35c9 100644
--- a/src/lib/libc/net/res_query.c
+++ b/src/lib/libc/net/res_query.c
@@ -368,6 +368,8 @@ __hostalias(name)
 
         if (_res.options & RES_NOALIASES)
                 return (NULL);
+        if (getuid() != setuid())
+                return (NULL);
         file = getenv("HOSTALIASES");
         if (file == NULL || (fp = fopen(file, "r")) == NULL)
                 return (NULL);