From: patchwork-bot+netdevbpf@kernel.org
To: Asim Viladi Oglu Manizada <manizada@pm.me>
Cc: netdev@vger.kernel.org, willemdebruijn.kernel@gmail.com,
jasowangio@gmail.com, andrew+netdev@lunn.ch, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com
Subject: Re: [PATCH net v3] net: tun: bound receive headroom
Date: Fri, 14 Aug 2026 03:23:52 +0000 [thread overview]
Message-ID: <178667783289.3150297.10268280469070580698.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260812012139.2134643-1-manizada@pm.me>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Wed, 12 Aug 2026 01:21:53 +0000 you wrote:
> tun_get_user() uses tun->align both as skb headroom and when choosing how
> much packet data to keep linear. OVS can propagate an oversized headroom
> request from another port to TUN or TAP.
>
> When align is larger than the usable space in a one-page skb head,
> SKB_MAX_HEAD(align) underflows and the result becomes negative when stored
> in good_linear. That value later wraps when assigned to the size_t linear
> variable, and tun_alloc_skb() can place skb->data outside the allocated
> head.
>
> [...]
Here is the summary with links:
- [net,v3] net: tun: bound receive headroom
https://git.kernel.org/netdev/net/c/447c9303942c
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2026-08-14 3:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-12 1:21 [PATCH net v3] net: tun: bound receive headroom Asim Viladi Oglu Manizada
2026-08-12 12:23 ` Willem de Bruijn
2026-08-14 3:23 ` patchwork-bot+netdevbpf [this message]
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