linux-kernel - Re: [PATCH] usb: storage: sddr55: avoid integer overflow

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:   Mon, 6 Feb 2023 15:17:05 -0500
From:   Alan Stern <stern@...land.harvard.edu>
To:     Sergei Shtylyov <sergei.shtylyov@...il.com>
Cc:     Karina Yankevich <k.yankevich@....ru>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, usb-storage@...ts.one-eyed-alien.net,
        linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org
Subject: Re: [PATCH] usb: storage: sddr55: avoid integer overflow

On Mon, Feb 06, 2023 at 11:04:54PM +0300, Sergei Shtylyov wrote:
> Hello!
> 
> On 2/3/23 11:48 PM, Alan Stern wrote:
> [...]
> >> We're possibly losing information by shifting an int.
> >> Fix it by adding the necessary cast.
> > 
> > Nonsense.  The card's _total_ capacity is no larger than 128 MB, so a 
> > page address can't possibly overflow an int.
> 
>    Then the 'address' variables shouldn't be declared *unsigned long*, right?
> That should fix the SVACE's report as well. Would you accept such a patch?

Yes.

Alan Stern