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[Bug 1448912] Re: BUG: unable to handle kernel NULL pointer dereference (aa_label_merge)

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Kees Cook <kees@xxxxxxxxxx>
Date: Fri, 22 May 2015 15:39:11 -0000
Reply-to: Bug 1448912 <1448912@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Summary changed:

- BUG: unable to handle kernel NULL pointer dereference
+ BUG: unable to handle kernel NULL pointer dereference (aa_label_merge)

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https://bugs.launchpad.net/bugs/1448912

Title:
  BUG: unable to handle kernel NULL pointer dereference (aa_label_merge)

Status in AppArmor Linux application security framework:
  Confirmed
Status in linux package in Ubuntu:
  New

Bug description:
  I had a kernel problem with one of my high availability VMs. This was not the first occurence of the problem, it seems to appear every now and then.
  The VM froze because of the Kernel bug appended as a text file. I had to hard reset it.
  I am running Ubuntu 14.04.2 Kernel 3.16.0-34-generic with libapache2-mod-apparmor 2.8.95~2430-0ubuntu5.1 and apache 2.4.7-1ubuntu4.4 (mpm_prefork).
  Unfortunately I am unable to reproduce the bug at will. This is a serious problem for high availability VMs.
  Looking at the trace, I assume this is a bug in AppArmor.

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