lua: fix CVE-2014-5461

[openwrt/staging/wigyori.git] / package / utils / lua / patches-host / 400-CVE-2014-5461.patch

diff --git a/package/utils/lua/patches-host/400-CVE-2014-5461.patch b/package/utils/lua/patches-host/400-CVE-2014-5461.patch
new file mode 100644 (file)
index 0000000..cce73ff
--- /dev/null
+++ b/package/utils/lua/patches-host/400-CVE-2014-5461.patch
@@ -0,0 +1,19 @@
+From: Enrico Tassi <gareuselesinge@debian.org>
+Date: Tue, 26 Aug 2014 16:20:55 +0200
+Subject: Fix stack overflow in vararg functions
+
+---
+ src/ldo.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/src/ldo.c
++++ b/src/ldo.c
+@@ -274,7 +274,7 @@ int luaD_precall (lua_State *L, StkId fu
+     CallInfo *ci;
+     StkId st, base;
+     Proto *p = cl->p;
+-    luaD_checkstack(L, p->maxstacksize);
++    luaD_checkstack(L, p->maxstacksize + p->numparams);
+     func = restorestack(L, funcr);
+     if (!p->is_vararg) {  /* no varargs? */
+       base = func + 1;