linux-kernel - Re: [PATCH v2 1/1] net/sched: cls_u32: Fix reference counter leak leading to overflow

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]

Message-Id: <168630782237.20473.1733377791755125144.git-patchwork-notify@kernel.org>
Date:   Fri, 09 Jun 2023 10:50:22 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Lee Jones <lee@...nel.org>
Cc:     jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, stable@...nel.org
Subject: Re: [PATCH v2 1/1] net/sched: cls_u32: Fix reference counter leak leading
 to overflow

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@...emloft.net>:

On Thu,  8 Jun 2023 08:29:03 +0100 you wrote:
> In the event of a failure in tcf_change_indev(), u32_set_parms() will
> immediately return without decrementing the recently incremented
> reference counter.  If this happens enough times, the counter will
> rollover and the reference freed, leading to a double free which can be
> used to do 'bad things'.
> 
> In order to prevent this, move the point of possible failure above the
> point where the reference counter is incremented.  Also save any
> meaningful return values to be applied to the return data at the
> appropriate point in time.
> 
> [...]

Here is the summary with links:
  - [v2,1/1] net/sched: cls_u32: Fix reference counter leak leading to overflow
    https://git.kernel.org/netdev/net/c/04c55383fa56

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html