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From: David Miller <davem@davemloft.net>
To: lebon.zhou@gmail.com
Cc: kuba@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Fix memory overwriting issue when copy an address to user space
Date: Fri, 17 Jul 2020 18:43:06 -0700 (PDT)	[thread overview]
Message-ID: <20200717.184306.746700973177455464.davem@davemloft.net> (raw)
In-Reply-To: <CAEQHRfB2f4x2r9Sk1+ixAFjUTcFQArv9wtWfjq3igGfUgZBhXw@mail.gmail.com>

From: lebon zhou <lebon.zhou@gmail.com>
Date: Fri, 17 Jul 2020 10:31:54 +0000

> When application provided buffer size less than sockaddr_storage, then
> kernel will overwrite some memory area which may cause memory corruption,
> e.g.: in recvmsg case, let msg_name=malloc(8) and msg_namelen=8, then
> usually application can call recvmsg successful but actually application
> memory get corrupted.
> 
> Fix to return EINVAL when application buffer size less than
> sockaddr_storage.
> 
> Signed-off-by: lebon.zhou <lebon.zhou@gmail.com>

Please post networking fixes to netdev@vger.kernel.org

Thank you.

  parent reply	other threads:[~2020-07-18  1:43 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-17 10:31 lebon zhou
2020-07-17 17:50 ` Jakub Kicinski
2020-07-18  1:43 ` David Miller [this message]
2020-07-20  4:34 lebon zhou
2020-07-20 15:12 ` David Laight
2020-07-21  4:23   ` lebon zhou

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