netdev - Re: [PATCH net] net: dsa: mv88e6xxx: fix use-after-free in mv88e6xxx_mdios

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]

Message-Id: <164452321091.17968.16088246642739956763.git-patchwork-notify@kernel.org>
Date:   Thu, 10 Feb 2022 20:00:10 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org, f.fainelli@...il.com, andrew@...n.ch,
        vivien.didelot@...il.com, olteanv@...il.com, davem@...emloft.net,
        kuba@...nel.org, rafael.richter@....de, daniel.klauer@....de
Subject: Re: [PATCH net] net: dsa: mv88e6xxx: fix use-after-free in
 mv88e6xxx_mdios_unregister

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@...nel.org>:

On Thu, 10 Feb 2022 19:40:17 +0200 you wrote:
> Since struct mv88e6xxx_mdio_bus *mdio_bus is the bus->priv of something
> allocated with mdiobus_alloc_size(), this means that mdiobus_free(bus)
> will free the memory backing the mdio_bus as well. Therefore, the
> mdio_bus->list element is freed memory, but we continue to iterate
> through the list of MDIO buses using that list element.
> 
> To fix this, use the proper list iterator that handles element deletion
> by keeping a copy of the list element next pointer.
> 
> [...]

Here is the summary with links:
  - [net] net: dsa: mv88e6xxx: fix use-after-free in mv88e6xxx_mdios_unregister
    https://git.kernel.org/netdev/net/c/51a04ebf2112

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html