netdev - Re: [PATCH] decnet: fix shutdown parameter checking

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1346059001.2703.7.camel@menhir>
Date:	Mon, 27 Aug 2012 10:16:41 +0100
From:	Steven Whitehouse <swhiteho@...hat.com>
To:	Xi Wang <xi.wang@...il.com>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] decnet: fix shutdown parameter checking


On Sun, 2012-08-26 at 22:37 -0400, Xi Wang wrote:
> The allowed value of "how" is SHUT_RD/SHUT_WR/SHUT_RDWR (0/1/2),
> rather than SHUTDOWN_MASK (3).
> 
> Signed-off-by: Xi Wang <xi.wang@...il.com>
Acked-by: Steven Whitehouse <swhiteho@...hat.com>

Although it could be argued that we should also continue to accept the
value 3 just in case there is any userland software out there which
sends that value,

Steve.

> ---
>  net/decnet/af_decnet.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
> index 2ba1a28..307c322 100644
> --- a/net/decnet/af_decnet.c
> +++ b/net/decnet/af_decnet.c
> @@ -1313,10 +1313,10 @@ static int dn_shutdown(struct socket *sock, int how)
>  	if (scp->state == DN_O)
>  		goto out;
>  
> -	if (how != SHUTDOWN_MASK)
> +	if (how != SHUT_RDWR)
>  		goto out;
>  
> -	sk->sk_shutdown = how;
> +	sk->sk_shutdown = SHUTDOWN_MASK;
>  	dn_destroy_sock(sk);
>  	err = 0;
>  


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html