summaryrefslogtreecommitdiffstats
path: root/patches/glibc-2.18/0010-malloc-Check-for-integer-overflow-in-pvalloc.patch
diff options
context:
space:
mode:
Diffstat (limited to 'patches/glibc-2.18/0010-malloc-Check-for-integer-overflow-in-pvalloc.patch')
-rw-r--r--patches/glibc-2.18/0010-malloc-Check-for-integer-overflow-in-pvalloc.patch37
1 files changed, 0 insertions, 37 deletions
diff --git a/patches/glibc-2.18/0010-malloc-Check-for-integer-overflow-in-pvalloc.patch b/patches/glibc-2.18/0010-malloc-Check-for-integer-overflow-in-pvalloc.patch
deleted file mode 100644
index 9331ceb..0000000
--- a/patches/glibc-2.18/0010-malloc-Check-for-integer-overflow-in-pvalloc.patch
+++ /dev/null
@@ -1,37 +0,0 @@
-From: Will Newton <will.newton@linaro.org>
-Date: Mon, 12 Aug 2013 15:08:02 +0100
-Subject: [PATCH] malloc: Check for integer overflow in pvalloc.
-
-A large bytes parameter to pvalloc could cause an integer overflow
-and corrupt allocator internals. Check the overflow does not occur
-before continuing with the allocation.
-
-ChangeLog:
-
-2013-09-11 Will Newton <will.newton@linaro.org>
-
- [BZ #15855]
- * malloc/malloc.c (__libc_pvalloc): Check the value of bytes
- does not overflow.
----
- malloc/malloc.c | 7 +++++++
- 1 file changed, 7 insertions(+)
-
-diff --git a/malloc/malloc.c b/malloc/malloc.c
-index be472b2..bcc08c4 100644
---- a/malloc/malloc.c
-+++ b/malloc/malloc.c
-@@ -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;
-+ }
-+
- void *(*hook) (size_t, size_t, const void *) =
- force_reg (__memalign_hook);
- if (__builtin_expect (hook != NULL, 0))