netdev - Re: [PATCH v3 net] net: Fix load-tearing on sk->sk_stamp in sock_recv

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: Tue, 9 May 2023 11:07:16 +0200
From: Eric Dumazet <edumazet@...gle.com>
To: Kuniyuki Iwashima <kuniyu@...zon.com>
Cc: "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, Kuniyuki Iwashima <kuni1840@...il.com>, netdev@...r.kernel.org, 
	syzbot <syzkaller@...glegroups.com>
Subject: Re: [PATCH v3 net] net: Fix load-tearing on sk->sk_stamp in sock_recv_cmsgs().

On Mon, May 8, 2023 at 7:56 PM Kuniyuki Iwashima <kuniyu@...zon.com> wrote:
>
> KCSAN found a data race in sock_recv_cmsgs() where the read access
> to sk->sk_stamp needs READ_ONCE().
>
>
> Fixes: 6c7c98bad488 ("sock: avoid dirtying sk_stamp, if possible")
> Reported-by: syzbot <syzkaller@...glegroups.com>
> Signed-off-by: Kuniyuki Iwashima <kuniyu@...zon.com>
> ---

Reviewed-by: Eric Dumazet <edumazet@...gle.com>

Thanks.