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 1512086c8cb855af64d216cd78464d1ab0481255..7a1b20ec52164d155bbc5f06d0f15c2cb604e57b 100644 (file)
--- 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",