CVE-2014-8134
Description
The paravirt_ops_setup function in arch/x86/kernel/kvm.c in the Linux kernel through 3.18 uses an improper paravirt_enabled setting for KVM guest kernels, which makes it easier for guest OS users to bypass the ASLR protection mechanism via a crafted application that reads a 16-bit value.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2014-8134
Vendor advisory: secalert@redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=1172765
Vendor advisory: secalert@redhat.com — https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1400314
Vendor advisory: secalert@redhat.com — http://www.spinics.net/lists/kvm/msg111458.html
Vendor advisory: secalert@redhat.com — http://people.canonical.com/~ubuntu-security/cve/2014/CVE-2014-8134.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 3.16.7-ckt4-1 |
| debian | bullseye | fixed | 3.16.7-ckt4-1 |
| debian | forky | fixed | 3.16.7-ckt4-1 |
| debian | sid | fixed | 3.16.7-ckt4-1 |
| debian | trixie | fixed | 3.16.7-ckt4-1 |
| linux-kernel | affected | | |
| suse | 13.1 | affected | |
| suse | 11 | affected | |
| ubuntu | 12.04 | affected | |
| ubuntu | 14.04 | affected | |
| ubuntu | 16.04 | affected | |
References
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
- http://people.canonical.com/~ubuntu-security/cve/2014/CVE-2014-8134.html
- http://rhn.redhat.com/errata/RHSA-2016-0855.html
- http://secunia.com/advisories/62336
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.securityfocus.com/bid/71650
- http://www.spinics.net/lists/kvm/msg111458.html
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1400314
- https://bugzilla.novell.com/show_bug.cgi?id=909078
- https://bugzilla.redhat.com/show_bug.cgi?id=1172765
- https://support.f5.com/csp/article/K17120
- https://support.f5.com/csp/article/K17120?utm_source=f5support&%3Butm_medium=RSS
- https://security-tracker.debian.org/tracker/CVE-2014-8134
Verify integrity in audit chain (admin only). AS-IS.