diff -r 4779a6fb4fbe -r f2c772336ecd src/server/daemon/keyfile_auth.c
--- a/src/server/daemon/keyfile_auth.c	Sat Oct 24 17:34:32 2020 +0200
+++ b/src/server/daemon/keyfile_auth.c	Sun Nov 01 08:24:21 2020 +0100
@@ -93,7 +93,7 @@
             return -1;
         }
         for(int i=0;i<ngroups;i++) {
-            user->groups[i] = sstrdup(groups[i]);
+            user->groups[i] = sstrdup_a(a, groups[i]);
         }
         
     } else {