linux-kernel - RE: [PATCH] mei: bus: type promotion bug in mei_nfc_if

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: <5B8DA87D05A7694D9FA63FD143655C1B9D968DBA@hasmsx108.ger.corp.intel.com>
Date:   Mon, 9 Jul 2018 11:36:21 +0000
From:   "Winkler, Tomas" <tomas.winkler@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dan Carpenter <dan.carpenter@...cle.com>
CC:     "Usyskin, Alexander" <alexander.usyskin@...el.com>,
        Arnd Bergmann <arnd@...db.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: RE: [PATCH] mei: bus: type promotion bug in mei_nfc_if_version()

> 
> On Wed, Jul 04, 2018 at 12:34:49PM +0300, Dan Carpenter wrote:
> > We accidentally removed the check for negative returns without
> > considering the issue of type promotion.  The "if_version_length"
> > variable is type size_t so if __mei_cl_recv() returns a negative then
> > "bytes_recv" is type promoted to a high positive value and treated as
> > success.
> >
> > Fixes: 582ab27a063a ("mei: bus: fix received data size check in NFC
> > fixup")
> > Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> 
> Didn't apply to my tree at all :(

I will rework this, anyhow I would prefer if you can wait for my signoff before applying, 
I believe we are reasonably responsive. 
Thanks
Tomas