linux-kernel - Re: [PATCH] net/mlx5e/core/en_fs: fix pointer dereference after free in mlx5e_execute_l2

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] [day] [month] [year] [list]

Date:   Wed, 08 Nov 2017 14:55:24 -0600
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     David Miller <davem@...emloft.net>
Cc:     saeedm@...lanox.com, matanb@...lanox.com, leonro@...lanox.com,
        netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net/mlx5e/core/en_fs: fix pointer dereference after
 free in mlx5e_execute_l2_action


Quoting David Miller <davem@...emloft.net>:

> From: "Gustavo A. R. Silva" <garsilva@...eddedor.com>
> Date: Sat, 4 Nov 2017 22:54:53 -0500
>
>> hn is being kfree'd in mlx5e_del_l2_from_hash and then dereferenced
>> by accessing hn->ai.addr
>>
>> Fix this by copying the MAC address into a local variable for its safe use
>> in all possible execution paths within function mlx5e_execute_l2_action.
>>
>> Addresses-Coverity-ID: 1417789
>> Fixes: eeb66cdb6826 ("net/mlx5: Separate between E-Switch and MPFS")
>> Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
>
> Applied and queued up for -stable, thanks.

Awesome. Thanks!

--
Gustavo A. R. Silva