From: Len Brown <len.brown@intel.com>
Date: Fri, 8 Dec 2017 22:38:17 +0000 (-0500)
Subject: tools/power turbostat: fix possible sprintf buffer overflow
X-Git-Tag: v4.14.75~90
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=3a738e7f734ce0308377fbed37683bf355f0c12f;p=users%2Fjedix%2Flinux-maple.git

tools/power turbostat: fix possible sprintf buffer overflow

commit 46c2797826cc6d1ae36fcbd966e76f9fa1907eef upstream.

Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Alakesh Haloi <alakeshh@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 1512086c8cb8..7a1b20ec5216 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -1485,7 +1485,7 @@ int get_mp(int cpu, struct msr_counter *mp, unsigned long long *counterp)
 		if (get_msr(cpu, mp->msr_num, counterp))
 			return -1;
 	} else {
-		char path[128];
+		char path[128 + PATH_BYTES];
 
 		if (mp->flags & SYSFS_PERCPU) {
 			sprintf(path, "/sys/devices/system/cpu/cpu%d/%s",