- dtucker@cvs.openbsd.org 2010/01/09 11:17:56

     [sshd.c]
     Afer sshd receives a SIGHUP, ignore subsequent HUPs while sshd re-execs
     itself.  Prevents two HUPs in quick succession from resulting in sshd
     dying.  bz#1692, patch from Colin Watson via Ubuntu.

2 files changed, 7 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 094d1bec3..47cb97afe 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -28,6 +28,11 @@
      Prevent sftp from derefing a null pointer when given a "-" without a
      command.  Also, allow whitespace to follow a "-".  bz#1691, path from
      Colin Watson via Debian.  ok djm@ deraadt@
+   - dtucker@cvs.openbsd.org 2010/01/09 11:17:56
+     [sshd.c]
+     Afer sshd receives a SIGHUP, ignore subsequent HUPs while sshd re-execs
+     itself.  Prevents two HUPs in quick succession from resulting in sshd
+     dying.  bz#1692, patch from Colin Watson via Ubuntu.
 
 20091208
  - (dtucker) OpenBSD CVS Sync
diff --git a/sshd.c b/sshd.c
index e23d462ee..bdaf1574a 100644
--- a/sshd.c
+++ b/sshd.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshd.c,v 1.368 2009/10/28 16:38:18 reyk Exp $ */
+/* $OpenBSD: sshd.c,v 1.369 2010/01/09 11:17:56 dtucker Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -309,6 +309,7 @@ sighup_restart(void)
 	close_listen_socks();
 	close_startup_pipes();
 	alarm(0);  /* alarm timer persists across exec */
+	signal(SIGHUP, SIG_IGN); /* will be restored after exec */
 	execv(saved_argv[0], saved_argv);
 	logit("RESTART FAILED: av[0]='%.100s', error: %.100s.", saved_argv[0],
 	    strerror(errno));