[patch 12/43] Check user space timespec in do_sys_settimeofday

[Thomas Gleixner <tglx@linutronix.de>]

plain text document attachment (sys-settimeofday-check-timespec.patch)
- Check if the timespec which is provided from user space is
  normalized.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

 kernel/time.c |    3 +++
 1 files changed, 3 insertions(+)

Index: linux-2.6.15-rc2-rework/kernel/time.c
===================================================================
--- linux-2.6.15-rc2-rework.orig/kernel/time.c
+++ linux-2.6.15-rc2-rework/kernel/time.c
@@ -154,6 +154,9 @@ int do_sys_settimeofday(struct timespec 
 	static int firsttime = 1;
 	int error = 0;
 
+	if (!timespec_valid(tv))
+		return -EINVAL;
+
 	error = security_settime(tv, tz);
 	if (error)
 		return error;

--

-
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