netdev - Re: [PATCH net] net: fix UaF in netns ops registration error path

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:   Sat, 21 Jan 2023 03:00:17 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Paolo Abeni <pabeni@...hat.com>
Cc:     netdev@...r.kernel.org, edumazet@...gle.com, davem@...emloft.net,
        kuba@...nel.org, shaozhengchao@...wei.com
Subject: Re: [PATCH net] net: fix UaF in netns ops registration error path

Hello:

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

On Thu, 19 Jan 2023 19:55:45 +0100 you wrote:
> If net_assign_generic() fails, the current error path in ops_init() tries
> to clear the gen pointer slot. Anyway, in such error path, the gen pointer
> itself has not been modified yet, and the existing and accessed one is
> smaller than the accessed index, causing an out-of-bounds error:
> 
>  BUG: KASAN: slab-out-of-bounds in ops_init+0x2de/0x320
>  Write of size 8 at addr ffff888109124978 by task modprobe/1018
> 
> [...]

Here is the summary with links:
  - [net] net: fix UaF in netns ops registration error path
    https://git.kernel.org/netdev/net/c/71ab9c3e2253

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