diff --git glibc-2.17-c758a686/malloc/malloc.c glibc-2.17-c758a686/malloc/malloc.c

index 3148c5f..f7718a9 100644

--- glibc-2.17-c758a686/malloc/malloc.c

+++ glibc-2.17-c758a686/malloc/malloc.c

@@ -3015,6 +3015,13 @@ __libc_memalign(size_t alignment, size_t bytes)

   /* Otherwise, ensure that it is at least a minimum chunk size */

   if (alignment <  MINSIZE) alignment = MINSIZE;

+  /* Check for overflow.  */

+  if (bytes > SIZE_MAX - alignment - MINSIZE)

+    {

+      __set_errno (ENOMEM);

+      return 0;

+    }

+

   arena_get(ar_ptr, bytes + alignment + MINSIZE);

   if(!ar_ptr)

     return 0;

@@ -3046,6 +3046,13 @@ __libc_valloc(size_t bytes)

   size_t pagesz = GLRO(dl_pagesize);

+  /* Check for overflow.  */

+  if (bytes > SIZE_MAX - pagesz - MINSIZE)

+    {

+      __set_errno (ENOMEM);

+      return 0;

+    }

+

   __malloc_ptr_t (*hook) __MALLOC_PMT ((size_t, size_t,

 					const __malloc_ptr_t)) =

     force_reg (__memalign_hook);

@@ -3082,6 +3082,13 @@ __libc_pvalloc(size_t bytes)

   size_t page_mask = GLRO(dl_pagesize) - 1;

   size_t rounded_bytes = (bytes + page_mask) & ~(page_mask);

+  /* Check for overflow.  */

+  if (bytes > SIZE_MAX - 2*pagesz - MINSIZE)

+    {

+      __set_errno (ENOMEM);

+      return 0;

+    }

+

   __malloc_ptr_t (*hook) __MALLOC_PMT ((size_t, size_t,

 					const __malloc_ptr_t)) =

     force_reg (__memalign_hook);