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| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2016-12-05 11:44:23 +0100 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-02-23 03:54:43 +0000 |
| commit | 2dd5177598ac0a78ee5860f3f7cec45b41385469 (patch) | |
| tree | ba7e30352c370151b4be52fb6a5570fdb76e5e67 /include | |
| parent | 2cc1ff50c4772742158ea4b0f162e33db5328256 (diff) | |
| download | linux-stable-2dd5177598ac0a78ee5860f3f7cec45b41385469.tar.gz linux-stable-2dd5177598ac0a78ee5860f3f7cec45b41385469.tar.bz2 linux-stable-2dd5177598ac0a78ee5860f3f7cec45b41385469.zip | |
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: Ben Hutchings <ben@decadent.org.uk>
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 41892f720057..54cfc4d92883 100644 --- a/include/uapi/linux/can.h +++ b/include/uapi/linux/can.h @@ -190,5 +190,6 @@ 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 */ |