1 files changed, 29 insertions, 0 deletions
diff --git a/system/musl/2000-pthread-internals-increase-DEFAULT_GUARD_SIZE-to-2-p.patch b/system/musl/2000-pthread-internals-increase-DEFAULT_GUARD_SIZE-to-2-p.patch
new file mode 100644
index 000000000..b39664dac
--- /dev/null
+++ b/system/musl/2000-pthread-internals-increase-DEFAULT_GUARD_SIZE-to-2-p.patch
@@ -0,0 +1,29 @@
+From 58dec23397e3fcc4300cc03839ce5e508389abbc Mon Sep 17 00:00:00 2001
+From: William Pitcock <nenolod@dereferenced.org>
+Date: Thu, 22 Jun 2017 22:04:51 +0000
+Subject: [PATCH] pthread internals: increase DEFAULT_GUARD_SIZE to 2 pages
+ instead of 1 page.
+
+This is intended to be a proactive mitigation against any bugs similar to CVE-2017-1000366.
+
+Signed-off-by: William Pitcock <nenolod@dereferenced.org>
+---
+ src/internal/pthread_impl.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/internal/pthread_impl.h b/src/internal/pthread_impl.h
+index ae0ab1c5..ad4ea3fa 100644
+--- a/src/internal/pthread_impl.h
++++ b/src/internal/pthread_impl.h
+@@ -146,7 +146,7 @@ void __block_app_sigs(void *);
+ void __restore_sigs(void *);
+ 
+ #define DEFAULT_STACK_SIZE 81920
+-#define DEFAULT_GUARD_SIZE 4096
++#define DEFAULT_GUARD_SIZE 8192
+ 
+ #define __ATTRP_C11_THREAD ((void*)(uintptr_t)-1)
+ 
+-- 
+2.13.0
+