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: <20240205-plant-seufzen-3c25de168ea8@brauner>
Date: Mon, 5 Feb 2024 13:27:31 +0100
From: Christian Brauner <brauner@...nel.org>
To: Al Viro <viro@...iv.linux.org.uk>
Cc: linux-fsdevel@...r.kernel.org, 
	Linus Torvalds <torvalds@...ux-foundation.org>, linux-ext4@...r.kernel.org, linux-nfs@...r.kernel.org, 
	Miklos Szeredi <miklos@...redi.hu>, linux-cifs@...r.kernel.org
Subject: Re: [PATCH 04/13] exfat: move freeing sbi, upcase table and dropping
 nls into rcu-delayed helper

On Sun, Feb 04, 2024 at 02:17:30AM +0000, Al Viro wrote:
> That stuff can be accessed by ->d_hash()/->d_compare(); as it is, we have
> a hard-to-hit UAF if rcu pathwalk manages to get into ->d_hash() on a filesystem
> that is in process of getting shut down.
> 
> Besides, having nls and upcase table cleanup moved from ->put_super() towards
> the place where sbi is freed makes for simpler failure exits.
> 
> Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
> ---

Acked-by: Christian Brauner <brauner@...nel.org>

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ