CVE-2014-8134
First published: Wed Dec 10 2014(Updated: )
It was found that espfix funcionality (when returning to userspace with a 16 bit stack, the CPU will not restore the high word of esp for us on executing iret and thus potentially leaks kernel addresses; espfix fixes this) does not work for 32-bit KVM paravirt guests. A local unprivileged user could potentially use this flaw to leak kernel stack addresses. Proposed upstream patch: <a href="http://www.spinics.net/lists/kvm/msg111458.html">http://www.spinics.net/lists/kvm/msg111458.html</a> Acknowledgements: Red Hat would like to thank Andy Lutomirski for reporting this issue.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <=3.18 | |
| Canonical Ubuntu Linux | =12.04 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Opensuse Evergreen | =11.4 | |
| openSUSE openSUSE | =13.1 | |
| SUSE SUSE Linux Enterprise Server | =11-sp2 | |
| Oracle Linux | =6 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.106-3 6.1.112-1 6.11.4-1 |
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Reference Links
- http://secunia.com/advisories/62336
- http://www.securityfocus.com/bid/71650
- https://bugzilla.redhat.com/show_bug.cgi?id=1172765
- http://rhn.redhat.com/errata/RHSA-2016-0855.html
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
- http://www.spinics.net/lists/kvm/msg111458.html
- http://people.canonical.com/~ubuntu-security/cve/2014/CVE-2014-8134.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1400314
- https://bugzilla.novell.com/show_bug.cgi?id=909078
- https://support.f5.com/csp/article/K17120
- https://support.f5.com/csp/article/K17120?utm_source=f5support&amp%3Butm_medium=RSS
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html
- https://launchpad.net/bugs/cve/CVE-2014-8134
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1172769
- https://git.kernel.org/cgit/virt/kvm/kvm.git/commit/?h=linux-next&id=29fa6825463c97e5157284db80107d1bfac5d77b
- https://rhn.redhat.com/errata/RHSA-2016-0855.html
- https://support.f5.com/csp/article/K17120?utm_source=f5support&%3Butm_medium=RSS
- https://security-tracker.debian.org/tracker/CVE-2014-8134
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8134
- https://nvd.nist.gov/vuln/detail/CVE-2014-8134
- https://ubuntu.com/security/CVE-2014-8134
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