linux-kernel - Re: [GIT PULL 7/7] stm class: Prevent division by zero

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 Feb 2019 15:42:31 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [GIT PULL 7/7] stm class: Prevent division by zero

On Thu, Feb 21, 2019 at 03:49:59PM +0200, Alexander Shishkin wrote:
> Using STP_POLICY_ID_SET ioctl command with dummy_stm device, or any STM
> device that supplies zero mmio channel size, will trigger a division by
> zero bug in the kernel.
> 
> Prevent this by disallowing channel widths other than 1 for such devices.
> 
> Signed-off-by: Alexander Shishkin <alexander.shishkin@...ux.intel.com>

Fixes: tag?

stable?