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

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Message-Id: <20171108.110000.1557345961530017114.davem@davemloft.net>
Date:   Wed, 08 Nov 2017 11:00:00 +0900 (KST)
From:   David Miller <davem@...emloft.net>
To:     garsilva@...eddedor.com
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

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.