netdev - Re: [PATCH 01/39] memcg_write_event_control(): fix a user-triggerable oops

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: <20240730071851.GE5334@ZenIV>
Date: Tue, 30 Jul 2024 08:18:51 +0100
From: Al Viro <viro@...iv.linux.org.uk>
To: Michal Hocko <mhocko@...e.com>
Cc: viro@...nel.org, linux-fsdevel@...r.kernel.org, amir73il@...il.com,
	bpf@...r.kernel.org, brauner@...nel.org, cgroups@...r.kernel.org,
	kvm@...r.kernel.org, netdev@...r.kernel.org,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH 01/39] memcg_write_event_control(): fix a
 user-triggerable oops

On Tue, Jul 30, 2024 at 09:13:38AM +0200, Michal Hocko wrote:
> On Tue 30-07-24 01:15:47, viro@...nel.org wrote:
> > From: Al Viro <viro@...iv.linux.org.uk>
> > 
> > we are *not* guaranteed that anything past the terminating NUL
> > is mapped (let alone initialized with anything sane).
> > 
> > [the sucker got moved in mainline]
> > 
> 
> You could have preserved
> Fixes: 0dea116876ee ("cgroup: implement eventfd-based generic API for notifications")
> Cc: stable
> 
> > Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
> 
> and
> Acked-by: Michal Hocko <mhocko@...e.com>

Will do; FWIW, I think it would be better off going via the
cgroup tree - it's completely orthogonal to the rest of the
series, the only relation being "got caught during the same
audit"...