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From: patchwork-bot+netdevbpf@kernel.org
To: Eric Dumazet <edumazet@google.com>
Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
	netdev@vger.kernel.org, eric.dumazet@gmail.com,
	syzkaller@googlegroups.com, axboe@kernel.dk
Subject: Re: [PATCH net] net: clear msg_get_inq in __sys_recvfrom() and __copy_msghdr_from_user()
Date: Fri, 24 Jun 2022 04:20:13 +0000	[thread overview]
Message-ID: <165604441325.4225.13959139452095084994.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20220622150220.1091182-1-edumazet@google.com>

Hello:

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

On Wed, 22 Jun 2022 15:02:20 +0000 you wrote:
> syzbot reported uninit-value in tcp_recvmsg() [1]
> 
> Issue here is that msg->msg_get_inq should have been cleared,
> otherwise tcp_recvmsg() might read garbage and perform
> more work than needed, or have undefined behavior.
> 
> Given CONFIG_INIT_STACK_ALL_ZERO=y is probably going to be
> the default soon, I chose to change __sys_recvfrom() to clear
> all fields but msghdr.addr which might be not NULL.
> 
> [...]

Here is the summary with links:
  - [net] net: clear msg_get_inq in __sys_recvfrom() and __copy_msghdr_from_user()
    https://git.kernel.org/netdev/net/c/1228b34c8d0e

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html



      parent reply	other threads:[~2022-06-24  4:20 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-22 15:02 [PATCH net] net: clear msg_get_inq in __sys_recvfrom() and __copy_msghdr_from_user() Eric Dumazet
2022-06-22 15:24 ` Jens Axboe
2022-06-23  4:42   ` Eric Dumazet
2022-06-24  4:20 ` patchwork-bot+netdevbpf [this message]

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