linux-kernel - Re: [PATCH net v3] mctp i2c: handle NULL header address

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241022141845.GV402847@kernel.org>
Date: Tue, 22 Oct 2024 15:18:45 +0100
From: Simon Horman <horms@...nel.org>
To: Matt Johnston <matt@...econstruct.com.au>
Cc: Jeremy Kerr <jk@...econstruct.com.au>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Andrew Lunn <andrew+netdev@...n.ch>, Wolfram Sang <wsa@...nel.org>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org, Dung Cao <dung@...amperecomputing.com>
Subject: Re: [PATCH net v3] mctp i2c: handle NULL header address

On Tue, Oct 22, 2024 at 06:25:14PM +0800, Matt Johnston wrote:
> daddr can be NULL if there is no neighbour table entry present,
> in that case the tx packet should be dropped.
> 
> saddr will usually be set by MCTP core, but check for NULL in case a
> packet is transmitted by a different protocol.
> 
> Fixes: f5b8abf9fc3d ("mctp i2c: MCTP I2C binding driver")
> Cc: stable@...r.kernel.org
> Reported-by: Dung Cao <dung@...amperecomputing.com>
> Signed-off-by: Matt Johnston <matt@...econstruct.com.au>
> ---
> Changes in v3:
> - Revert to simpler saddr check of v1, mention in commit message
> - Revert whitespace change from v2
> - Link to v2: https://lore.kernel.org/r/20241021-mctp-i2c-null-dest-v2-1-4503e478517c@codeconstruct.com.au
> 
> Changes in v2:
> - Set saddr to device address if NULL, mention in commit message
> - Fix patch prefix formatting
> - Link to v1: https://lore.kernel.org/r/20241018-mctp-i2c-null-dest-v1-1-ba1ab52966e9@codeconstruct.com.au

Thanks for the updates Matt.

Reviewed-by: Simon Horman <horms@...nel.org>