netdev - RE: [PATCH net-next 2/6] Support for SCTP

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Date:	Tue, 17 Jun 2014 12:36:42 +0000
From:	David Laight <David.Laight@...LAB.COM>
To:	'Geir Ola Vaagland' <geirola@...il.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:	"linux-sctp@...r.kernel.org" <linux-sctp@...r.kernel.org>,
	Vlad Yasevich <vyasevich@...il.com>
Subject: RE: [PATCH net-next 2/6] Support for SCTP_RCVINFO ancillary data

From: Geir Ola Vaagland
...
> +struct sctp_rcvinfo {
> +	__u16 rcv_sid;
> +	__u16 rcv_ssn;
> +	__u16 rcv_flags;
> +	__u32 rcv_ppid;
> +	__u32 rcv_tsn;
> +	__u32 rcv_cumtsn;
> +	__u32 rcv_context;
> +	sctp_assoc_t rcv_assoc_id;
> +};

There are two pad bytes in the middle of the above.
You leak kernel data to userspace.

...
	David



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