From e5c702d3b268066dc70d619ecff06a08065f343f Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Tue, 15 Jan 2013 13:31:43 +0000 Subject: [PATCH] Xen: properly bound buffer access when parsing cpu/*/availability At the same time reduce the local buffers to 16 bytes each. Signed-off-by: Jan Beulich Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/cpu_hotplug.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/xen/cpu_hotplug.c b/drivers/xen/cpu_hotplug.c index 4dcfced107f5..084041d42c9a 100644 --- a/drivers/xen/cpu_hotplug.c +++ b/drivers/xen/cpu_hotplug.c @@ -25,10 +25,10 @@ static void disable_hotplug_cpu(int cpu) static int vcpu_online(unsigned int cpu) { int err; - char dir[32], state[32]; + char dir[16], state[16]; sprintf(dir, "cpu/%u", cpu); - err = xenbus_scanf(XBT_NIL, dir, "availability", "%s", state); + err = xenbus_scanf(XBT_NIL, dir, "availability", "%15s", state); if (err != 1) { if (!xen_initial_domain()) printk(KERN_ERR "XENBUS: Unable to read cpu state\n"); -- 2.20.1