From 6217f110281e2eebc4368aeb640d7478d079c398 Mon Sep 17 00:00:00 2001
From: jsteube <jens.steube@gmail.com>
Date: Sat, 12 Aug 2017 13:34:21 +0200
Subject: [PATCH] Backport missing boundary check to CPU

---
 src/rp_kernel_on_cpu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/rp_kernel_on_cpu.c b/src/rp_kernel_on_cpu.c
index 4b1ddd356..dbc42d2f5 100644
--- a/src/rp_kernel_on_cpu.c
+++ b/src/rp_kernel_on_cpu.c
@@ -152,6 +152,8 @@ static int mangle_prepend (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, u
 {
   const int out_len = len + 1;
 
+  if (out_len >= RP_PASSWORD_SIZE) return (len);
+
   for (int pos = len - 1; pos >= 0; pos--)
   {
     buf[pos + 1] = buf[pos];