linux-kernel - Re: CVE-2024-41041: udp: Set SOCK_RCU_FREE earlier in udp_lib_get

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Message-ID: <0ab22253fec2b0e65a95a22ceff799f39a2eaa0a.camel@oracle.com>
Date: Tue, 3 Sep 2024 11:56:17 +0000
From: Siddh Raman Pant <siddh.raman.pant@...cle.com>
To: "stable@...r.kernel.org" <stable@...r.kernel.org>
CC: "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>
Subject: Re: CVE-2024-41041: udp: Set SOCK_RCU_FREE earlier in
 udp_lib_get_port().

On Mon, 29 Jul 2024 16:32:36 +0200, Greg Kroah-Hartman wrote:
> In the Linux kernel, the following vulnerability has been resolved:
> 
> udp: Set SOCK_RCU_FREE earlier in udp_lib_get_port().
> 
> [...]
> 
> We had the same bug in TCP and fixed it in commit 871019b22d1b ("net:
> set SOCK_RCU_FREE before inserting socket into hashtable").
> 
> Let's apply the same fix for UDP.
> 
> [...]
> 
> The Linux kernel CVE team has assigned CVE-2024-41041 to this issue.
> 
> 
> Affected and fixed versions
> ===========================
> 
> 	Issue introduced in 4.20 with commit 6acc9b432e67 and fixed in 5.4.280 with commit 7a67c4e47626
> 	Issue introduced in 4.20 with commit 6acc9b432e67 and fixed in 5.10.222 with commit 9f965684c57c

These versions don't have the TCP fix backported. Please do so.

Thanks,
Siddh

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