dirty cow und 12.04 LTS

[Nils Kassube]

Lentes, Bernd wrote:
> i installed this kernel:
> http://packages.ubuntu.com/precise/kernel/linux-image-3.2.0-113-gener
> ic 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'

Is that a valid entry? I always thought the expression should be a 
number with the first entry being 0. Furthermore, if you get another 
update, you would have to change that line again.

Anyway, I would remove that entry and uninstall the 3.5 kernel, if you 
want to use the 3.2 kernel.


Nils