--- scheduler/job.c.orig	2018-10-04 11:01:52.227572708 +0000
+++ scheduler/job.c	2018-10-04 11:38:55.308279008 +0000
@@ -4778,7 +4778,7 @@
   const char	*filename;		/* Support filename */
 #ifdef WITH_LSPP
   char			*audit_message = NULL;	/* Audit message string */
-  char			*printerfile = NULL;	/* Device file pointed to by the printer */
+  char			printerfile[PATH_MAX];	/* Device file pointed to by the printer */
   security_id_t		clisid;		/* SELinux SID for the client */
   security_id_t		psid;		/* SELinux SID for the printer */
   context_t		printercon;	/* Printer's context string */
@@ -4970,14 +4970,13 @@
    /*
     * Perform an access check before printing, but only if the printer starts with /dev/
     */
-    printerfile = strstr(printer->device_uri, "/dev/");
-    if (printerfile == NULL && (strncmp(printer->device_uri, "file:/", 6) == 0))
-      printerfile = printer->device_uri + strlen("file:");
+    snprintf(printerfile, PATH_MAX, "/etc/cups/ppd/%s.ppd", printer->name );
+    printerfile[PATH_MAX]=0;
 
     if (printerfile != NULL)
     {
       cupsdLogJob(job, CUPSD_LOG_DEBUG,
-		  "Attempting to check access on printer device %s",
+		  "Attempting to check access on printer PPD file %s",
 		  printerfile);
       if (lstat(printerfile, &printerstat) < 0)
       {