netdev - Re: [PATCH v1] macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC

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Date: Wed, 26 Jul 2023 03:10:20 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Lin Ma <linma@....edu.cn>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] macvlan: add forgotten nla_policy for
 IFLA_MACVLAN_BC_CUTOFF

Hello:

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

On Sun, 23 Jul 2023 16:02:05 +0800 you wrote:
> The previous commit 954d1fa1ac93 ("macvlan: Add netlink attribute for
> broadcast cutoff") added one additional attribute named
> IFLA_MACVLAN_BC_CUTOFF to allow broadcast cutfoff.
> 
> However, it forgot to describe the nla_policy at macvlan_policy
> (drivers/net/macvlan.c). Hence, this suppose NLA_S32 (4 bytes) integer
> can be faked as empty (0 bytes) by a malicious user, which could leads
> to OOB in heap just like CVE-2023-3773.
> 
> [...]

Here is the summary with links:
  - [v1] macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF
    https://git.kernel.org/netdev/net/c/55cef78c244d

You are awesome, thank you!
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