From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52093) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1azku4-00034B-Sd for qemu-devel@nongnu.org; Mon, 09 May 2016 09:07:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1azktx-0000Dr-U4 for qemu-devel@nongnu.org; Mon, 09 May 2016 09:07:16 -0400 Received: from mail-vk0-x22c.google.com ([2607:f8b0:400c:c05::22c]:35369) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1azktx-0000De-JR for qemu-devel@nongnu.org; Mon, 09 May 2016 09:07:09 -0400 Received: by mail-vk0-x22c.google.com with SMTP id f66so64660191vkh.2 for ; Mon, 09 May 2016 06:07:09 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <1462798310-21395-1-git-send-email-kraxel@redhat.com> References: <1462798310-21395-1-git-send-email-kraxel@redhat.com> From: Peter Maydell Date: Mon, 9 May 2016 14:06:49 +0100 Message-ID: Content-Type: text/plain; charset=UTF-8 Subject: Re: [Qemu-devel] [PULL for-2.6 0/5] vga security fixes (CVE-2016-3710, CVE-2016-3712) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Gerd Hoffmann Cc: QEMU Developers On 9 May 2016 at 13:51, Gerd Hoffmann wrote: > Hi, > > Here comes a pull request for 2.6, fixing two security issues in the > vga emulation code. > > The first one (CVE-2016-3710, patch #1) is pretty serious, allowing the > guest read and write host memory. Possibly allows the guest to break > out of the vm. > > The second one (CVE-2016-3712) is a read overflow. DoS only (allows the > guest crash qemu). > > Both flaws are simliar: Programming the vga using both bochs vbe > registers and standard vga registers, create a unusual video mode, > bypass sanity checks that way. See actual patch descriptions for more > details. > > please pull, > Gerd > > The following changes since commit 277abf15a60f7653bfb05ffb513ed74ffdaea1b7: > > configure: Check if struct fsxattr is available from linux header (2016-05-02 13:04:26 +0100) > > are available in the git repository at: > > git://git.kraxel.org/qemu tags/pull-vga-20160509-1 > > for you to fetch changes up to fd3c136b3e1482cd0ec7285d6bc2a3e6a62c38d7: > > vga: make sure vga register setup for vbe stays intact (CVE-2016-3712). (2016-05-02 16:02:59 +0200) > > ---------------------------------------------------------------- > vga security fixes (CVE-2016-3710, CVE-2016-3712) > > ---------------------------------------------------------------- Applied to master, thanks. That was all we were waiting for to release 2.6, so I will tag rc5 this afternoon and barring disaster tag the final release (same contents) on Wednesday. thanks -- PMM