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authorMarc Kleine-Budde <mkl@pengutronix.de>2016-12-05 11:44:23 +0100
committerMarc Kleine-Budde <mkl@pengutronix.de>2016-12-07 10:45:57 +0100
commit332b05ca7a438f857c61a3c21a88489a21532364 (patch)
treef30e326f3e623c103bc6e9735e7e958a90ecef20 /include/uapi/linux/can.h
parentbc3913a5378cd0ddefd1dfec6917cc12eb23a946 (diff)
downloadlinux-332b05ca7a438f857c61a3c21a88489a21532364.tar.gz
can: raw: raw_setsockopt: limit number of can_filter that can be set
This patch adds a check to limit the number of can_filters that can be set via setsockopt on CAN_RAW sockets. Otherwise allocations > MAX_ORDER are not prevented resulting in a warning. Reference: https://lkml.org/lkml/2016/12/2/230 Reported-by: Andrey Konovalov <andreyknvl@google.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'include/uapi/linux/can.h')
-rw-r--r--include/uapi/linux/can.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/can.h b/include/uapi/linux/can.h
index 9692cda5f8fc..c48d93a28d1a 100644
--- a/include/uapi/linux/can.h
+++ b/include/uapi/linux/can.h
@@ -196,5 +196,6 @@ struct can_filter {
};
#define CAN_INV_FILTER 0x20000000U /* to be set in can_filter.can_id */
+#define CAN_RAW_FILTER_MAX 512 /* maximum number of can_filter set via setsockopt() */
#endif /* !_UAPI_CAN_H */