diff --git a/u_xdm-sig11-bug-598422.diff b/u_xdm-sig11-bug-598422.diff
new file mode 100644
index 0000000..843d26b
--- /dev/null
+++ b/u_xdm-sig11-bug-598422.diff
@@ -0,0 +1,99 @@
+Index: xdm-1.1.10/dm.h
+===================================================================
+--- xdm-1.1.10.orig/dm.h
++++ xdm-1.1.10/dm.h
+@@ -434,6 +434,7 @@ extern void DeleteXloginResources (struc
+ extern void LoadXloginResources (struct display *d);
+ extern void ManageSession (struct display *d);
+ extern void SecureDisplay (struct display *d, Display *dpy);
++extern void PamCloseSession(void);
+ extern void SessionExit (struct display *d, int status, int removeAuth);
+ extern void SessionPingFailed (struct display *d);
+ extern void SetupDisplay (struct display *d);
+Index: xdm-1.1.10/session.c
+===================================================================
+--- xdm-1.1.10.orig/session.c
++++ xdm-1.1.10/session.c
+@@ -290,6 +290,8 @@ SessionPingFailed (struct display *d)
+     	AbortClient (clientPid);
+ 	source (verify.systemEnviron, d->reset);
+     }
++
++    PamCloseSession();
+     SessionExit (d, RESERVER_DISPLAY, TRUE);
+ }
+ 
+@@ -417,6 +419,7 @@ ManageSession (struct display *d)
+      */
+     Debug ("Source reset program %s\n", d->reset);
+     source (verify.systemEnviron, d->reset);
++    PamCloseSession();
+     SessionExit (d, OBEYSESS_DISPLAY, TRUE);
+ }
+ 
+@@ -480,6 +483,7 @@ SecureDisplay (struct display *d, Displa
+     if (Setjmp (syncJump)) {
+ 	LogError ("WARNING: display %s could not be secured\n",
+ 		   d->name);
++	PamCloseSession();
+ 	SessionExit (d, RESERVER_DISPLAY, FALSE);
+     }
+     (void) alarm ((unsigned) d->grabTimeout);
+@@ -491,6 +495,7 @@ SecureDisplay (struct display *d, Displa
+ 	(void) Signal (SIGALRM, SIG_DFL);
+ 	LogError ("WARNING: keyboard on display %s could not be secured\n",
+ 		  d->name);
++	PamCloseSession();
+ 	SessionExit (d, RESERVER_DISPLAY, FALSE);
+     }
+     Debug ("XGrabKeyboard succeeded %s\n", d->name);
+@@ -515,8 +520,7 @@ UnsecureDisplay (struct display *d, Disp
+ }
+ 
+ void
+-SessionExit (struct display *d, int status, int removeAuth)
+-{
++PamCloseSession(void) {
+ #ifdef USE_PAM
+     pam_handle_t *pamh = thepamh();
+ 
+@@ -527,7 +531,11 @@ SessionExit (struct display *d, int stat
+ 	pamh = NULL;
+     }
+ #endif
++}
+ 
++void
++SessionExit (struct display *d, int status, int removeAuth)
++{
+     /* make sure the server gets reset after the session is over */
+     if (d->serverPid >= 2 && d->resetSignal)
+ 	kill (d->serverPid, d->resetSignal);
+Index: xdm-1.1.10/greeter/greet.c
+===================================================================
+--- xdm-1.1.10.orig/greeter/greet.c
++++ xdm-1.1.10/greeter/greet.c
+@@ -582,6 +582,7 @@ greet_user_rtn GreetUser(
+       pam_done:
+ 	if (code != 0)
+ 	{
++	    PamCloseSession();
+ 	    CloseGreet (d);
+ 	    SessionExit (d, code, FALSE);
+ 	}
+@@ -610,6 +611,7 @@ greet_user_rtn GreetUser(
+ 	code = Greet (d, greet);
+ 	if (code != 0)
+ 	{
++	    PamCloseSession();
+ 	    CloseGreet (d);
+ 	    SessionExit (d, code, FALSE);
+ 	}
+@@ -632,6 +634,7 @@ greet_user_rtn GreetUser(
+     {
+ 	Debug ("Startup program %s exited with non-zero status\n",
+ 		d->startup);
++	PamCloseSession();
+ 	SessionExit (d, OBEYSESS_DISPLAY, FALSE);
+     }
+     /*
diff --git a/xdm.changes b/xdm.changes
index 39342d7..b919e5a 100644
--- a/xdm.changes
+++ b/xdm.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Jul 29 09:25:40 UTC 2013 - sndirsch@suse.com
+
+- u_xdm-sig11-bug-598422.diff
+  * fix Sig11 in xdm when pressing Ctr-c (bnc#598422, bnc#831870)
+
 -------------------------------------------------------------------
 Fri Jun  7 10:25:15 UTC 2013 - werner@suse.de
 
diff --git a/xdm.spec b/xdm.spec
index eecfdfd..194c463 100644
--- a/xdm.spec
+++ b/xdm.spec
@@ -48,6 +48,7 @@ Patch1:         xdm-tolerant-hostname-changes.diff
 Patch2:         U_xdm_config-AC_LIBTOOL_DLOPEN-is-required-for-dynamic-lin.patch
 Patch3:         U_xdm_config-use-libtool-export-dynamic-option-for-reverse.patch
 Patch4:         U_xdm_Fix-missing-linking-dependency-on-ldl.patch
+Patch5:         u_xdm-sig11-bug-598422.diff
 %if 0%{?suse_version} >= 01140
 # Needed to create the man page symlink to init.d
 BuildRequires:  aaa_base-extras
@@ -95,6 +96,7 @@ cp %{SOURCE2} .
 %patch2 -p1
 %patch3 -p1
 %patch4 -p1
+%patch5 -p1
 # needed for patch0, patch2, patch3, patch4
 autoreconf -fi