Fix use after free in error message when a duplicate alias exists.

diff --git a/plugins/sudoers/alias.c b/plugins/sudoers/alias.c
index 2ca8add30757fbbc5eac7056f08970b96d379a08..578c30228f3d432d0dc56111d2ee8a6b254b33b0 100644 (file)
--- a/plugins/sudoers/alias.c
+++ b/plugins/sudoers/alias.c
@@ -121,8 +121,8 @@ alias_add(name, type, members)
     a->seqno = 0;
     list2tq(&a->members, members);
     if (rbinsert(aliases, a)) {
-       alias_free(a);
        snprintf(errbuf, sizeof(errbuf), "Alias `%s' already defined", name);
+       alias_free(a);
        return(errbuf);
     }
     return(NULL);