netdev - Re: [PATCH net v2] net: mctp: Don't access ifa

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Message-Id: 
 <174683343624.3841790.10861960505661534637.git-patchwork-notify@kernel.org>
Date: Fri, 09 May 2025 23:30:36 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Matt Johnston <matt@...econstruct.com.au>
Cc: jk@...econstruct.com.au, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, horms@...nel.org, netdev@...r.kernel.org,
 syzbot+e76d52dadc089b9d197f@...kaller.appspotmail.com,
 syzbot+1065a199625a388fce60@...kaller.appspotmail.com
Subject: Re: [PATCH net v2] net: mctp: Don't access ifa_index when missing

Hello:

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

On Thu, 08 May 2025 13:18:32 +0800 you wrote:
> In mctp_dump_addrinfo, ifa_index can be used to filter interfaces, but
> only when the struct ifaddrmsg is provided. Otherwise it will be
> comparing to uninitialised memory - reproducible in the syzkaller case from
> dhcpd, or busybox "ip addr show".
> 
> The kernel MCTP implementation has always filtered by ifa_index, so
> existing userspace programs expecting to dump MCTP addresses must
> already be passing a valid ifa_index value (either 0 or a real index).
> 
> [...]

Here is the summary with links:
  - [net,v2] net: mctp: Don't access ifa_index when missing
    https://git.kernel.org/netdev/net/c/f11cf946c0a9

You are awesome, thank you!
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