netdev - Re: [PATCH net 0/3] Some sockopt optlen fixes

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]

Date:   Mon, 8 Jan 2018 20:23:52 -0500
From:   Neil Horman <nhorman@...driver.com>
To:     Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Cc:     netdev@...r.kernel.org, linux-sctp@...r.kernel.org,
        Vlad Yasevich <vyasevich@...il.com>, haliu@...hat.com
Subject: Re: [PATCH net 0/3] Some sockopt optlen fixes

On Mon, Jan 08, 2018 at 07:02:26PM -0200, Marcelo Ricardo Leitner wrote:
> Hangbin Liu reported that some SCTP sockopt are allowing the user to get
> the kernel to allocate really large buffers by not having a ceiling on
> optlen.
> 
> This patchset address this issue (in patch 2), replace an GFP_ATOMIC
> that isn't needed and avoid calculating the option size multiple times
> in some setsockopt.
> 
> Marcelo Ricardo Leitner (3):
>   sctp: GFP_ATOMIC is not needed in sctp_setsockopt_events
>   sctp: add a ceiling to optlen in some sockopts
>   sctp: make use of pre-calculated len
> 
>  net/sctp/socket.c | 28 +++++++++++++++++++++-------
>  1 file changed, 21 insertions(+), 7 deletions(-)
> 
> -- 
> 2.14.3
> 
> 
Series
Acked-by: Neil Horman <nhorman@...driver.com>