linux-kernel - Re: [PATCH net] net: validate SO_TXTIME clockid coming from userspace

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]

Message-ID: <2c363f12-dd52-4163-bbcd-9a017cff6dd4@linux.dev>
Date: Tue, 28 May 2024 18:15:51 -0700
From: Martin KaFai Lau <martin.lau@...ux.dev>
To: Abhishek Chauhan <quic_abchauha@...cinc.com>
Cc: "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, Andrew Halaney <ahalaney@...hat.com>,
 Willem de Bruijn <willemdebruijn.kernel@...il.com>,
 Martin KaFai Lau <martin.lau@...nel.org>,
 Daniel Borkmann <daniel@...earbox.net>, bpf <bpf@...r.kernel.org>,
 kernel@...cinc.com, syzbot+d7b227731ec589e7f4f0@...kaller.appspotmail.com,
 syzbot+30a35a2e9c5067cc43fa@...kaller.appspotmail.com
Subject: Re: [PATCH net] net: validate SO_TXTIME clockid coming from userspace

On 5/28/24 3:49 PM, Abhishek Chauhan wrote:
> Currently there are no strict checks while setting SO_TXTIME
> from userspace. With the recent development in skb->tstamp_type
> clockid with unsupported clocks results in warn_on_once, which causes
> unnecessary aborts in some systems which enables panic on warns.
> 
> Add validation in setsockopt to support only CLOCK_REALTIME,
> CLOCK_MONOTONIC and CLOCK_TAI to be set from userspace.
> 
> Link: https://lore.kernel.org/netdev/bc037db4-58bb-4861-ac31-a361a93841d3@linux.dev/
> Link: https://lore.kernel.org/lkml/20240509211834.3235191-1-quic_abchauha@quicinc.com/
> Fixes: 1693c5db6ab8 ("net: Add additional bit to support clockid_t timestamp type")

Patch lgtm. This should target for net-next instead of net. The Fixes patch is 
in net-next only.

Acked-by: Martin KaFai Lau <martin.lau@...nel.org>