https://bugs.gentoo.org/925419
https://bugzilla.redhat.com/2190057
https://src.fedoraproject.org/rpms/psacct/blob/rawhide/f/psacct-6.6.4-sprintf-buffer-overflow.patch

--- a/dev_hash.c
+++ b/dev_hash.c
@@ -147,7 +147,7 @@ static void setup_devices(char *dirname)
     {
       char *fullname = (char *) alloca ((strlen (dirname)
                                          + NAMLEN (dp)
-                                         + 1) * sizeof (char));
+                                         + 2) * sizeof (char));  /* slash + null; Fedora BZ#2190057 */
 
       (void)sprintf (fullname, "%s/%s", dirname, dp->d_name);
       if (stat (fullname, &sp))