Re: [PATCH] net/netfilter: use memset avoid infoleaks

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Subject: Re: [PATCH] net/netfilter: use memset avoid infoleaks
From: Florian Westphal <fw@xxxxxxxxx>
Date: Tue, 1 Mar 2022 10:38:42 +0100
Cc: pablo@xxxxxxxxxxxxx, kadlec@xxxxxxxxxxxxx, fw@xxxxxxxxx, davem@xxxxxxxxxxxxx, kuba@xxxxxxxxxx, ast@xxxxxxxxxx, daniel@xxxxxxxxxxxxx, andrii@xxxxxxxxxx, kafai@xxxxxx, songliubraving@xxxxxx, yhs@xxxxxx, john.fastabend@xxxxxxxxx, kpsingh@xxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, coreteam@xxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, bpf@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Minghao Chi <chi.minghao@xxxxxxxxxx>, Zeal Robot <zealci@xxxxxxxxxx>
In-reply-to: <20220301081824.2053310-1-chi.minghao@zte.com.cn>
User-agent: Mutt/1.10.1 (2018-07-13)

cgel.zte@xxxxxxxxx <cgel.zte@xxxxxxxxx> wrote:
> From: Minghao Chi (CGEL ZTE) <chi.minghao@xxxxxxxxxx>
> 
> Use memset to initialize structs to preventing infoleaks
> in __bpf_mt_check_bytecode

What infoleak, care to elaborate?  I don't see where this gets
returned to userspace, its on-stack struct?

References:
- [PATCH] net/netfilter: use memset avoid infoleaks
  - From: cgel . zte

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