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
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <=3.18 | |
| Ubuntu Linux | =12.04 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| openSUSE Evergreen | =11.4 | |
| openSUSE | =13.1 | |
| SUSE Linux Enterprise Server | =11-sp2 | |
| Oracle Linux | =6 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 | |
| Linux kernel | <=3.18 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
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
Frequently Asked Questions
What is the severity of CVE-2014-8134?
CVE-2014-8134 is considered to be of medium severity due to its potential exploitation by local unprivileged users.
How do I fix CVE-2014-8134?
To fix CVE-2014-8134, update the Linux kernel to versions 5.10.223-1, 5.10.226-1, 6.1.123-1, or later versions.
What systems are affected by CVE-2014-8134?
CVE-2014-8134 affects various distributions including Debian, Ubuntu 12.04, 14.04, 16.04, openSUSE 13.1, and others.
Who can exploit CVE-2014-8134?
CVE-2014-8134 can be exploited by local unprivileged users with access to a 32-bit KVM paravirt guest.
What does CVE-2014-8134 affect specifically?
CVE-2014-8134 affects the espfix functionality, which may leak kernel addresses in certain conditions.
- agent/type
- collector/launchpad-cve
- source/Launchpad
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2014-8134
- agent/severity
- collector/mitre-cve
- source/MITRE
- collector/usn-cve
- source/Ubuntu
- agent/remedy
- agent/references
- agent/description
- agent/first-publish-date
- agent/last-modified-date
- agent/trending
- agent/source
- agent/event
- agent/author
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/softwarecombine
- agent/tags
- collector/security-tracker-debian
- source/Debian
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- vendor/linux
- canonical/linux kernel
- version/linux kernel/3.18
- vendor/canonical
- canonical/ubuntu linux
- version/ubuntu linux/12.04
- version/ubuntu linux/14.04
- version/ubuntu linux/16.04
- vendor/opensuse
- canonical/opensuse evergreen
- version/opensuse evergreen/11.4
- canonical/opensuse
- version/opensuse/13.1
- vendor/suse
- canonical/suse linux enterprise server
- version/suse linux enterprise server/11-sp2
- vendor/oracle
- canonical/oracle linux
- version/oracle linux/6
- package-manager/debian
- canonical/ubuntu
- version/ubuntu/12.04
- version/ubuntu/14.04
- version/ubuntu/16.04