netdev - Re: [PATCH net] sctp: change sk state only when it has assocs in sctp

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 for Android: free password hash cracker in your pocket

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

Message-Id: <20161114.162349.1179710065617941826.davem@davemloft.net>
Date:   Mon, 14 Nov 2016 16:23:49 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     lucien.xin@...il.com
Cc:     netdev@...r.kernel.org, linux-sctp@...r.kernel.org,
        marcelo.leitner@...il.com, nhorman@...driver.com,
        vyasevich@...il.com, andreyknvl@...gle.com
Subject: Re: [PATCH net] sctp: change sk state only when it has assocs in
 sctp_shutdown

From: Xin Long <lucien.xin@...il.com>
Date: Sun, 13 Nov 2016 21:44:37 +0800

> Now when users shutdown a sock with SEND_SHUTDOWN in sctp, even if
> this sock has no connection (assoc), sk state would be changed to
> SCTP_SS_CLOSING, which is not as we expect.
> 
> Besides, after that if users try to listen on this sock, kernel
> could even panic when it dereference sctp_sk(sk)->bind_hash in
> sctp_inet_listen, as bind_hash is null when sock has no assoc.
> 
> This patch is to move sk state change after checking sk assocs
> is not empty, and also merge these two if() conditions and reduce
> indent level.
> 
> Fixes: d46e416c11c8 ("sctp: sctp should change socket state when shutdown is received")
> Reported-by: Andrey Konovalov <andreyknvl@...gle.com>
> Tested-by: Andrey Konovalov <andreyknvl@...gle.com>
> Signed-off-by: Xin Long <lucien.xin@...il.com>

Applied and queued up for -stable, thanks.