linux-kernel - Re: [PATCH net v2] net/sched: flower: fix possible OOB write in fl_set_geneve

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Date:   Thu, 01 Jun 2023 11:10:19 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Hangyu Hua <hbh25y@...il.com>
Cc:     jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, simon.horman@...igine.com,
        pieter.jansen-van-vuuren@....com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net v2] net/sched: flower: fix possible OOB write in
 fl_set_geneve_opt()

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@...hat.com>:

On Wed, 31 May 2023 18:28:04 +0800 you wrote:
> If we send two TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets and their total
> size is 252 bytes(key->enc_opts.len = 252) then
> key->enc_opts.len = opt->length = data_len / 4 = 0 when the third
> TCA_FLOWER_KEY_ENC_OPTS_GENEVE packet enters fl_set_geneve_opt. This
> bypasses the next bounds check and results in an out-of-bounds.
> 
> Fixes: 0a6e77784f49 ("net/sched: allow flower to match tunnel options")
> Signed-off-by: Hangyu Hua <hbh25y@...il.com>
> 
> [...]

Here is the summary with links:
  - [net,v2] net/sched: flower: fix possible OOB write in fl_set_geneve_opt()
    https://git.kernel.org/netdev/net/c/4d56304e5827

You are awesome, thank you!
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