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: <20240223.eij0Oudai0Ia@digikod.net>
Date: Fri, 23 Feb 2024 21:03:52 +0100
From: Mickaël Salaün <mic@...ikod.net>
To: Casey Schaufler <casey@...aufler-ca.com>, 
	John Johansen <john.johansen@...onical.com>, Paul Moore <paul@...l-moore.com>
Cc: James Morris <jmorris@...ei.org>, 
	"Serge E . Hallyn" <serge@...lyn.com>, linux-kernel@...r.kernel.org, 
	linux-security-module@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 1/2] SELinux: Fix lsm_get_self_attr()

On Fri, Feb 23, 2024 at 08:59:34PM +0100, Mickaël Salaün wrote:
> On Fri, Feb 23, 2024 at 08:05:45PM +0100, Mickaël Salaün wrote:
> > selinux_lsm_getattr() may not initialize the value's pointer in some
> > case.  As for proc_pid_attr_read(), initialize this pointer to NULL in
> > selinux_getselfattr() to avoid an UAF in the kfree() call.
> 
> Not UAF but NULL pointer dereference (both patches)...

Well, that may be the result (as observed with the kfree() call), but
the cause is obviously an uninitialized pointer.

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ