From: patchwork-bot+netdevbpf@kernel.org
To: David CARLIER <devnexen@gmail.com>
Cc: netdev@vger.kernel.org, stable@vger.kernel.org,
davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, horms@kernel.org, sdf@fomichev.me,
sdf.kernel@gmail.com, kaiyuanz@google.com,
almasrymina@google.com, bobbyeshleman@gmail.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net v2] net: devmem: reject dma-buf bind with non-page-aligned size or SG length
Date: Thu, 21 May 2026 02:10:13 +0000 [thread overview]
Message-ID: <177932941389.3832404.9587362354062605317.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260519203530.66310-1-devnexen@gmail.com>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Tue, 19 May 2026 21:35:30 +0100 you wrote:
> net_devmem_bind_dmabuf() trusts dmabuf->size and sg_dma_len() to be
> PAGE_SIZE multiples without checking:
>
> - tx_vec is sized dmabuf->size / PAGE_SIZE, and
> net_devmem_get_niov_at() only bounds-checks virt_addr < dmabuf->size
> before indexing tx_vec[virt_addr / PAGE_SIZE]. With size =
> N*PAGE_SIZE + r (1 <= r < PAGE_SIZE), sendmsg() at iov_base =
> N*PAGE_SIZE passes the bound check and reads tx_vec[N] -- one past.
>
> [...]
Here is the summary with links:
- [net,v2] net: devmem: reject dma-buf bind with non-page-aligned size or SG length
https://git.kernel.org/netdev/net/c/4eb82ba54342
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2026-05-21 2:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-19 20:35 [PATCH net v2] net: devmem: reject dma-buf bind with non-page-aligned size or SG length David Carlier
2026-05-19 21:07 ` Bobby Eshleman
2026-05-19 23:33 ` Stanislav Fomichev
2026-05-20 18:55 ` Mina Almasry
2026-05-20 19:28 ` David CARLIER
2026-05-20 20:42 ` Mina Almasry
2026-05-20 21:02 ` David CARLIER
2026-05-21 2:10 ` patchwork-bot+netdevbpf [this message]
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