diff options
-rw-r--r-- | include/uapi/linux/can.h | 1 | ||||
-rw-r--r-- | net/can/raw.c | 3 |
2 files changed, 4 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 */ diff --git a/net/can/raw.c b/net/can/raw.c index 081e81fd017f..9f5ee3a6b666 100644 --- a/net/can/raw.c +++ b/net/can/raw.c @@ -466,6 +466,9 @@ static int raw_setsockopt(struct socket *sock, int level, int optname, if (optlen % sizeof(struct can_filter) != 0) return -EINVAL; + if (optlen > CAN_RAW_FILTER_MAX * sizeof(struct can_filter)) + return -EINVAL; + count = optlen / sizeof(struct can_filter); if (count > 1) { |