netdev - Re: [PATCH] [SCTP]: Add address type check while process paramaters of ASCONF chunk

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Message-ID: <48297BE9.9020204@trash.net>
Date:	Tue, 13 May 2008 13:30:49 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Vlad Yasevich <vladislav.yasevich@...com>
CC:	netdev@...r.kernel.org, davem@...emloft.net,
	linux-sctp@...r.kernel.org,
	lksctp-developers@...ts.sourceforge.net,
	Wei Yongjun <yjwei@...fujitsu.com>
Subject: Re: [PATCH] [SCTP]: Add address type check while process paramaters
 of ASCONF chunk

Vlad Yasevich wrote:
> @@ -2827,6 +2827,19 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
>  	union sctp_addr	addr;
>  	union sctp_addr_param *addr_param;
>  
> +	switch (addr_param->v4.param_hdr.type) {

^^^ use of addr_param

> +	case SCTP_PARAM_IPV6_ADDRESS:
> +		if (!asoc->peer.ipv6_address)
> +			return SCTP_ERROR_INV_PARAM;
> +		break;
> +	case SCTP_PARAM_IPV4_ADDRESS:
> +		if (!asoc->peer.ipv4_address)
> +			return SCTP_ERROR_INV_PARAM;
> +		break;
> +	default:
> +		return SCTP_ERROR_INV_PARAM;
> +	}
> +
>  	addr_param = (union sctp_addr_param *)
>  			((void *)asconf_param + sizeof(sctp_addip_param_t));

^^^ initialization of addr_param

The patch is wrong and needs this fix on top.





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