netdev - Re: [PATCH net] ppp_async: limit MRU to 64K

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CANn89i+tP20g2YSb-9rELT3s4Kz+ODOGTsbKf9eYH0JkzFcYSQ@mail.gmail.com>
Date: Tue, 6 Feb 2024 17:50:47 +0100
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: Antoine Tenart <atenart@...nel.org>, netdev@...r.kernel.org, eric.dumazet@...il.com, 
	syzbot+c5da1f087c9e4ec6c933@...kaller.appspotmail.com, 
	Willem de Bruijn <willemb@...gle.com>
Subject: Re: [PATCH net] ppp_async: limit MRU to 64K

On Tue, Feb 6, 2024 at 3:43 PM Eric Dumazet <edumazet@...gle.com> wrote:
>
> syzbot triggered a warning [1] in __alloc_pages():
>
> WARN_ON_ONCE_GFP(order > MAX_PAGE_ORDER, gfp)
>
> Willem fixed a similar issue in commit c0a2a1b0d631 ("ppp: limit MRU to 64K")
>
> Adopt the same sanity check for ppp_async_ioctl(PPPIOCSMRU)
>

Oops, sorry for the duplicate.