[packages/kernel.git] / linux-do_brk-bound-check.patch

diff -urN linux-2.4.22/mm/mmap.c linux-2.4.23/mm/mmap.c
--- linux-2.4.22/mm/mmap.c	2003-06-13 07:51:39.000000000 -0700
+++ linux-2.4.23/mm/mmap.c	2003-11-28 10:26:21.000000000 -0800
@@ -1041,6 +1041,9 @@
 	if (!len)
 		return addr;
 
+	if ((addr + len) > TASK_SIZE || (addr + len) < addr)
+		return -EINVAL;
+
 	/*
 	 * mlock MCL_FUTURE?
 	 */
Commit	Line	Data
94dc8ee9 AM	1	diff -urN linux-2.4.22/mm/mmap.c linux-2.4.23/mm/mmap.c
	2	--- linux-2.4.22/mm/mmap.c 2003-06-13 07:51:39.000000000 -0700
	3	+++ linux-2.4.23/mm/mmap.c 2003-11-28 10:26:21.000000000 -0800
	4	@@ -1041,6 +1041,9 @@
	5	if (!len)
	6	return addr;
	7
	8	+ if ((addr + len) > TASK_SIZE \|\| (addr + len) < addr)
	9	+ return -EINVAL;
	10	+
	11	/*
	12	* mlock MCL_FUTURE?
	13	*/
	14