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Date: Mon, 25 Jan 2021 21:44:25 -0500
From: Rich Felker <>
To: "zhuyan (M)" <>
Cc: "" <>,
	Zengweilin <>,
	"liucheng (G)" <>,
	"chenzefeng (A)" <>
Subject: Re: [PATCH] fix segfault in recvmsg when msg argument is NULL

On Tue, Jan 12, 2021 at 07:58:26AM +0000, zhuyan (M) wrote:
> When msg is NULL, msg->msg_controllen exists to dereference a null pointer in recvmsg.

"The recvmsg() function takes the following arguments:
        Points to a msghdr structure, ..."

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