netdev - Re: [v2 PATCH 0/4] mac80211: Fix incorrect usage of rhashtable walk API

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: <634cde01c2ab0cf00f7c82791dd93fec07aef976.camel@sipsolutions.net>
Date:   Wed, 13 Feb 2019 15:55:12 +0100
From:   Johannes Berg <johannes@...solutions.net>
To:     Herbert Xu <herbert@...dor.apana.org.au>,
        David Miller <davem@...emloft.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org, j@...fi,
        tgraf@...g.ch
Subject: Re: [v2 PATCH 0/4] mac80211: Fix incorrect usage of rhashtable walk
 API

On Wed, 2019-02-13 at 22:38 +0800, Herbert Xu wrote:
> Hi:
> 
> The first two patches in this series are bug fixes and should be
> backported to stable.
> 
> They fixes a number of issues with the use of the rhashtable API
> in mac80211.  First of all it converts the use of rashtable walks over
> to a simple linked list.  This is because an rhashtable walk is
> inherently unstable and not meant for uses that require stability,
> e.g., when you're trying to lookup an object to delete.
> 
> It also fixes a potential memory leak when the rhashtable insertion
> fails (which can occur due to OOM).

Thanks a lot Herbert! That looks simpler than I thought it would be.

johannes