From: Hanno Boeck <hanno@gentoo.org>
Date: Fri, 25 Mar 2016 19:10:15 +0000 (+0900)
Subject: lua: Avoid heap buffer overflow
X-Git-Tag: v0.19.8~34
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0571be87e09c6db11be8c56c773b563c2b4c99a4;p=thirdparty%2Fgettext.git

lua: Avoid heap buffer overflow

* gettext-tools/src/x-lua.c (string_end): Allocate a room for
terminating NUL.  Reported in: http://savannah.gnu.org/bugs/?4753

Copyright-paperwork-exempt: yes
---

diff --git a/gettext-tools/src/x-lua.c b/gettext-tools/src/x-lua.c
index 0399c49e6..78ac24f1e 100644
--- a/gettext-tools/src/x-lua.c
+++ b/gettext-tools/src/x-lua.c
@@ -451,6 +451,12 @@ string_add (int c)
 static void
 string_end ()
 {
+  if (string_buf_length >= string_buf_alloc)
+    {
+      string_buf_alloc = string_buf_alloc + 1;
+      string_buf = xrealloc (string_buf, string_buf_alloc);
+    }
+
   string_buf[string_buf_length] = '\0';
 }