linux-kernel - Re: [PATCH resend 3/5] libata-scsi: fix overflow in mode page copy

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]

Date:	Thu, 21 Jul 2016 17:42:02 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Tom Yan <tom.ty89@...il.com>
Cc:	Hannes Reinecke <hare@...e.de>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Arnd Bergmann <arnd@...db.de>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-ide@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-next@...r.kernel.org
Subject: Re: [PATCH resend 3/5] libata-scsi: fix overflow in mode page copy

On Fri, Jul 22, 2016 at 05:39:27AM +0800, Tom Yan wrote:
> Let me know how I should polish the description for this.

The above is because the signed ones are getting sign-extended making
them different from the unsigned ones which don't get padded in the
high bits.  Converting to u8 is the right thing to do but nothing here
is getting truncated.

Thanks.

-- 
tejun