diff options
| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2016-12-05 11:44:23 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-12-15 08:49:22 -0800 |
| commit | 083021bdba1e6d480170a4ae86cddc10f88c54d5 (patch) | |
| tree | 323ffab0cc23aaf5f28da7d45db43d5b38bc45e1 /include | |
| parent | 9a3baed9103bc413a5e98e13e31cd8ae7c0b5563 (diff) | |
can: raw: raw_setsockopt: limit number of can_filter that can be set
commit 332b05ca7a438f857c61a3c21a88489a21532364 upstream.
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>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/can.h | 1 |
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 */ |