netdev - Re: [PATCH net v6] xsk: avoid data corruption on cq descriptor number

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: 
 <176412960651.1513924.4064352345159631206.git-patchwork-notify@kernel.org>
Date: Wed, 26 Nov 2025 04:00:06 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Fernando Fernandez Mancera <fmancera@...e.de>
Cc: netdev@...r.kernel.org, csmate@....hu, kerneljasonxing@...il.com,
 maciej.fijalkowski@...el.com, bpf@...r.kernel.org, davem@...emloft.net,
 edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, horms@...nel.org,
 sdf@...ichev.me, hawk@...nel.org, daniel@...earbox.net, ast@...nel.org,
 john.fastabend@...il.com, magnus.karlsson@...el.com
Subject: Re: [PATCH net v6] xsk: avoid data corruption on cq descriptor number

Hello:

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

On Mon, 24 Nov 2025 18:14:09 +0100 you wrote:
> Since commit 30f241fcf52a ("xsk: Fix immature cq descriptor
> production"), the descriptor number is stored in skb control block and
> xsk_cq_submit_addr_locked() relies on it to put the umem addrs onto
> pool's completion queue.
> 
> skb control block shouldn't be used for this purpose as after transmit
> xsk doesn't have control over it and other subsystems could use it. This
> leads to the following kernel panic due to a NULL pointer dereference.
> 
> [...]

Here is the summary with links:
  - [net,v6] xsk: avoid data corruption on cq descriptor number
    https://git.kernel.org/netdev/net/c/0ebc27a4c67d

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