From: patchwork-bot+netdevbpf@kernel.org
To: Stanislav Fomichev <sdf.kernel@gmail.com>
Cc: netdev@vger.kernel.org, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org, pabeni@redhat.com, anthony.l.nguyen@intel.com,
przemyslaw.kitszel@intel.com, andrew+netdev@lunn.ch,
saeedm@nvidia.com, tariqt@nvidia.com, mbloch@nvidia.com,
ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org,
john.fastabend@gmail.com, sdf@fomichev.me,
maxime.chevallier@bootlin.com, mcoquelin.stm32@gmail.com,
alexandre.torgue@foss.st.com, aleksander.lobakin@intel.com,
horms@kernel.org, magnus.karlsson@intel.com,
maciej.fijalkowski@intel.com, witu@nvidia.com,
alice.kernel@fastmail.im, dtatulea@nvidia.com,
yoong.siang.song@intel.com, martin.lau@kernel.org,
intel-wired-lan@lists.osuosl.org, linux-kernel@vger.kernel.org,
linux-rdma@vger.kernel.org, bpf@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org, leon@kernel.org,
AutonomousCodeSecurity@microsoft.com, blbllhy@gmail.com
Subject: Re: [PATCH net 0/6] xsk: harden TX metadata validation against races
Date: Mon, 03 Aug 2026 23:50:24 +0000 [thread overview]
Message-ID: <178580102466.2881314.4527278917944249834.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260727161959.885642-1-sdf@fomichev.me>
Hello:
This series was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Mon, 27 Jul 2026 09:19:53 -0700 you wrote:
> Cen Zhang reported a KASAN out-of-bounds read when AF_XDP is configured
> with a TX metadata area smaller than struct xsk_tx_metadata. The metadata
> is also shared with user space, so reading its flags more than once can
> produce inconsistent validation and processing decisions.
>
> Require enough space for the flags and one request field, validate the
> launch-time field against the configured metadata length, and use one
> snapshot of the flags while processing each request. Carry the validated
> decision through completion handling so later user-space changes cannot
> enable an unrequested completion timestamp.
>
> [...]
Here is the summary with links:
- [net,1/6] xsk: require at least 16 bytes of TX metadata
https://git.kernel.org/netdev/net/c/1bb30b181d9f
- [net,2/6] xsk: pass TX metadata pointer by reference
https://git.kernel.org/netdev/net/c/19366db6dfcc
- [net,3/6] xsk: clear metadata pointer when no timestamp is requested
https://git.kernel.org/netdev/net/c/9f60a67df8d3
- [net,4/6] xsk: validate launch-time metadata size
https://git.kernel.org/netdev/net/c/439ce2dddf3d
- [net,5/6] xsk: move xsk_tx_metadata_request() to xdp_sock_drv.h
https://git.kernel.org/netdev/net/c/ddd0d6c5bfe2
- [net,6/6] xsk: validate metadata when processing requests
https://git.kernel.org/netdev/net/c/849b1664dbda
You are awesome, thank you!
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prev parent reply other threads:[~2026-08-03 23:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-27 16:19 [PATCH net 0/6] xsk: harden TX metadata validation against races Stanislav Fomichev
2026-07-27 16:19 ` [PATCH net 1/6] xsk: require at least 16 bytes of TX metadata Stanislav Fomichev
2026-07-27 16:19 ` [PATCH net 2/6] xsk: pass TX metadata pointer by reference Stanislav Fomichev
2026-07-27 16:19 ` [PATCH net 3/6] xsk: clear metadata pointer when no timestamp is requested Stanislav Fomichev
2026-07-27 16:19 ` [PATCH net 4/6] xsk: validate launch-time metadata size Stanislav Fomichev
2026-07-27 16:19 ` [PATCH net 5/6] xsk: move xsk_tx_metadata_request() to xdp_sock_drv.h Stanislav Fomichev
2026-07-27 16:19 ` [PATCH net 6/6] xsk: validate metadata when processing requests Stanislav Fomichev
2026-07-29 9:39 ` [PATCH net 0/6] xsk: harden TX metadata validation against races Maciej Fijalkowski
2026-07-29 16:08 ` Stanislav Fomichev
2026-08-03 23:50 ` patchwork-bot+netdevbpf [this message]
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