[PATCH 9/9] perf: Known exploit detection for CVE-2013-2094

[vegard . nossum]

From: Vegard Nossum <vegard.nossum@xxxxxxxxxx>

See 8176cced706b5e5d15887584150764894e94e02f.

Cc: Tommi Rantala <tt.rantala@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Vegard Nossum <vegard.nossum@xxxxxxxxxx>
---
 kernel/events/core.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 953c143..32b9383 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -39,6 +39,7 @@
 #include <linux/hw_breakpoint.h>
 #include <linux/mm_types.h>
 #include <linux/cgroup.h>
+#include <linux/exploit.h>
 
 #include "internal.h"
 
@@ -5721,6 +5722,7 @@ static void sw_perf_event_destroy(struct perf_event *event)
 static int perf_swevent_init(struct perf_event *event)
 {
 	u64 event_id = event->attr.config;
+	exploit_on((int) event_id < 0, "CVE-2013-2094");
 
 	if (event->attr.type != PERF_TYPE_SOFTWARE)
 		return -ENOENT;
-- 
1.7.10.4

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