netdev - Re: [PATCH] net: prevent of emerging cross-namespace symlinks

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] [day] [month] [year] [list]

Date:	Mon, 25 Aug 2014 15:18:40 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	git.user@...il.com
Cc:	netdev@...r.kernel.org, vfalico@...hat.com
Subject: Re: [PATCH] net: prevent of emerging cross-namespace symlinks

From: "Alexander Y. Fomichev" <git.user@...il.com>
Date: Mon, 25 Aug 2014 16:26:45 +0400

> Code manipulating sysfs symlinks on adjacent net_devices(s)
> currently doesn't take into account that devices potentially
> belong to different namespaces.
> 
> This patch trying to fix an issue as follows:
> - check for net_ns before creating / deleting symlink.
>   for now only netdev_adjacent_rename_links and
>   __netdev_adjacent_dev_remove are affected, afaics
>   __netdev_adjacent_dev_insert implies both net_devs
>   belong to the same namespace.
> - Drop all existing symlinks to / from all adj_devs before
>   switching namespace and recreate them just after.
> 
> Signed-off-by: Alexander Y. Fomichev <git.user@...il.com>

Applied, thanks.
--
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