lua51/lua51-5.1.5-cve-2014-5461.patch

22 lines
648 B
Diff

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(-)
diff --git a/src/ldo.c b/src/ldo.c
index d1bf786..30333bf 100644
--- a/src/ldo.c
+++ b/src/ldo.c
@@ -274,7 +274,7 @@ int luaD_precall (lua_State *L, StkId func, int nresults) {
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;