netdev - Re: [patch net 1/2] net: sched: fix clsact init error path

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]

Date:   Fri, 15 Dec 2017 11:17:11 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        Jamal Hadi Salim <jhs@...atatu.com>, mlxsw@...lanox.com,
        Daniel Borkmann <daniel@...earbox.net>
Subject: Re: [patch net 1/2] net: sched: fix clsact init error path

On Fri, Dec 15, 2017 at 3:40 AM, Jiri Pirko <jiri@...nulli.us> wrote:
> From: Jiri Pirko <jiri@...lanox.com>
>
> Since in qdisc_create, the destroy op is called when init fails, we
> don't do cleanup in init and leave it up to destroy.
> This fixes use-after-free when trying to put already freed block.
>
> Fixes: 6e40cf2d4dee ("net: sched: use extended variants of block_get/put in ingress and clsact qdiscs")
> Signed-off-by: Jiri Pirko <jiri@...lanox.com>

Acked-by: Cong Wang <xiyou.wangcong@...il.com>