dirty cow und 12.04 LTS

[Colin Law]

On 27 October 2016 at 16:23, Lentes, Bernd <
bernd.lentes at helmholtz-muenchen.de> wrote:

>
> ----- On Oct 27, 2016, at 5:04 PM, Colin Law clanlaw at gmail.com wrote:
>
> > On 27 October 2016 at 15:58, Ralf Mardorf < silver.bullet at zoho.com >
> wrote:
>
> > 12.04 is still being supported (till next year I think) so normally
> dist-upgrade
> > will work. The problem is that the system is using a 12.10 kernel, which
> is
> > EOL.
>
> > Colin
>
> > --
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> Hi Colin,
>
> i installed this kernel: http://packages.ubuntu.com/
> precise/kernel/linux-image-3.2.0-113-generic


I think you probably just need to install  linux-image-generic but not
certain.

Colin



>
> The changelog said:
> linux (3.2.0-113.155) precise; urgency=low
>
>   * CVE-2016-5195
>     - SAUCE: mm: remove gup_flags FOLL_WRITE games from __get_user_pages()
>
>  -- Stefan Bader <stefan.bader at canonical.com>  Tue, 18 Oct 2016 10:32:41
> +0200
> (http://changelogs.ubuntu.com/changelogs/pool/main/l/linux/
> linux_3.2.0-113.155/changelog)
> So i think this is dirty-cow related.
>
> Installation went fine, i see the "new" kernel and the initrd in /boot.
> But system boots still the "old kernel" (3.5.0.23.30)
>
> I changed /etc/default/grub:
>
> ...
> GRUB_DEFAULT='Ubuntu, with Linux 3.2.0-113-generic'
> ...
>
> This is my /boot/grub/grub.cfg:
>
> ...
> menuentry 'Ubuntu, with Linux 3.5.0-23-generic' --class ubuntu --class
> gnu-linux --class gnu --class os {
> ...
> }
> menuentry 'Ubuntu, with Linux 3.5.0-23-generic (recovery mode)' --class
> ubuntu --class gnu-linux --class gnu --class os {
>  ...
> }
>
> submenu "Previous Linux versions" {
> menuentry 'Ubuntu, with Linux 3.2.0-113-generic' --class ubuntu --class
> gnu-linux --class gnu --class os {
>         recordfail
>         gfxmode $linux_gfx_mode
>         insmod gzio
>         insmod part_msdos
>         insmod ext2
>         set root='(hd0,msdos1)'
>         search --no-floppy --fs-uuid --set=root 6631ef2a-0a8d-4bef-914b-
> fcb6ae39dc47
>         linux   /boot/vmlinuz-3.2.0-113-generic
> root=UUID=6631ef2a-0a8d-4bef-914b-fcb6ae39dc47 ro
>         initrd  /boot/initrd.img-3.2.0-113-generic
> }
>
> menuentry 'Ubuntu, with Linux 3.2.0-113-generic (recovery mode)' --class
> ubuntu --class gnu-linux --class gnu --class os {
> ...
> }
> ...
>
> Afterwards i ran update-grub and "grub-install /dev/sda". Both ran fine,
> no errors.
>
> But still the "old" kernel boots.
>
> I'm not very familiar with Ubuntu, i use mostly Suse.
>
>
> Bernd
>
>
>
>
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