New Kernel for security reasaons ? [SOLVED]

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New Kernel for security reasaons ? [SOLVED]

Postby JoeHurke on Sun Feb 24, 2013 6:37 pm

I'm using LinuxMint 13 (KDE) still with Kernel 3.2.0-23.
For Ubuntu 12.4 LTS as base of LinuxMint 13 there have been some Kernel updates for security reasons. Currently they are using Kernel 3.2.0-38 http://www.ubuntu.com/usn/usn-1741-1/ .
Why don't I get a "more secure" Kernel for LinuxMint 13 ?

I've activated "main, upstream and import" packages, NOT: backport, romeo and sources.
UpdateManager shows me packages of the levels 1,2,3, no unsecure or dangerous/unstable packages.
In my opinion these settings are defaults.
Kernel updates havn't been shown to me yet.
I've got no problem with the current kernel, except that it might be unsecure.
Last edited by JoeHurke on Tue Feb 26, 2013 7:39 pm, edited 1 time in total.
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Re: New Kernel for security reasaons ?

Postby eanfrid on Sun Feb 24, 2013 6:51 pm

A kernel update may break (edit: I.e. may be incompatible with) your current system and you also may have to recompile some out-of-tree drivers (especially network or video) afterwards. So these updates are level 5. Kernel updates are necessary security-wise, but have to be handled cautiously.

Edit: for example, coming from 3.2, I skipped 3.3 and 3.4 because my Debian machine could not complete the boot process. 3.5 was an excellent one and worked fine, as does 3.7 and 3.8 but 3.6 was also a no-go. For theses reasons I compile myself my own custom kernels.
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Re: New Kernel for security reasaons ?

Postby exploder on Sun Feb 24, 2013 7:07 pm

You can get kernel updates by using Synaptic.
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Re: New Kernel for security reasaons ?

Postby JoeHurke on Mon Feb 25, 2013 9:34 pm

Many thanks for that hints!

I don't use proprietary Graphic- or WLAN-Drivers. (Instead I use Intel-Chipset-Graphic and Cable-LAN.)
I've got no self-compiled modules.
So I would probably enable level 5 (dangerous) packages in the UpdateManager and accept next kernel for LinuxMint 13 or Ubuntu 12.4.

Will this new kernel replace the current one?
Or will this new kernel be installed as additional option in the boot manager menu, so that I can easily switch back to the old kernel, in case of compatibility problems?
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Re: New Kernel for security reasaons ?

Postby zerozero on Mon Feb 25, 2013 9:45 pm

the kernel doesn't replace the old one, you'll have an extra option at boot (default will be the newer unless you tweaked grub but you can chose any of the older ones)
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Re: New Kernel for security reasaons ?

Postby exploder on Mon Feb 25, 2013 9:47 pm

You will still have the old kernel. If there should happen to be a problem with the new kernel you can still boot from the old kernel. You should be fine with the kernel update though.
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Re: New Kernel for security reasaons ?

Postby JoeHurke on Tue Feb 26, 2013 7:38 pm

Many thanks for the answers! It has worked! :D
I've enabled level 5 packages. After refreshing availability kernel 3.2.0-38 was suggested. After reboot the new kernel and the previous one were listed by the boot manager. Now I am using the new kernel.
Many thanks for your quick help!
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