From: Johan Hovold <johan@kernel.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org
Subject: Re: [PATCH] USB: serial: mct_u232: fix memory corruption with small endpoint
Date: Wed, 20 May 2026 16:39:17 +0200 [thread overview]
Message-ID: <ag3HlaNEJvTsps_v@hovoldconsulting.com> (raw)
In-Reply-To: <2026052038-nemeses-bronze-b08c@gregkh>
On Wed, May 20, 2026 at 01:16:49PM +0200, Greg Kroah-Hartman wrote:
> On Wed, May 20, 2026 at 12:14:52PM +0200, Johan Hovold wrote:
> > The driver overrides the maximum transfer size for a specific device
> > which only accepts 16 byte packets for its 32 byte bulk-out endpoint.
> >
> > Make sure to never increase the maximum transfer size to prevent slab
> > corruption should a malicious device report a smaller endpoint max
> > packet size than expected.
> >
> > Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> > Cc: stable@vger.kernel.org
> > Signed-off-by: Johan Hovold <johan@kernel.org>
> > ---
>
> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thanks for reviewing these. Now applied.
Johan
prev parent reply other threads:[~2026-05-20 14:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-20 10:14 [PATCH] USB: serial: mct_u232: fix memory corruption with small endpoint Johan Hovold
2026-05-20 11:16 ` Greg Kroah-Hartman
2026-05-20 14:39 ` Johan Hovold [this message]
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