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[lxc.git] / debian / patches / 0001-conf-set-pty_info-to-NULL-after-free.patch

From e00c024230e457a0f37ea5c90bd8caac0c30020e Mon Sep 17 00:00:00 2001
From: Wolfgang Bumiller <w.bumiller@proxmox.com>
Date: Thu, 28 Jul 2016 11:52:18 +0200
Subject: [PATCH] conf: set pty_info to NULL after free

This fixes a double free corruption on container-requested
reboots when lxc_spawn() fails before receiving the ttys, as
lxc_fini() (part of __lxc_start()'s cleanup) calls
lxc_delete_tty().

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
---
 src/lxc/conf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/lxc/conf.c b/src/lxc/conf.c
index 48a2978..1e330ac 100644
--- a/src/lxc/conf.c
+++ b/src/lxc/conf.c
@@ -3327,6 +3327,7 @@ void lxc_delete_tty(struct lxc_tty_info *tty_info)
 	}
 
 	free(tty_info->pty_info);
+	tty_info->pty_info = NULL;
 	tty_info->nbtty = 0;
 }
 
-- 
2.1.4