CVE-2011-2512: Input Validation
First published: Tue Jun 28 2011(Updated: )
The virtio_queue_notify in qemu-kvm 0.14.0 and earlier does not properly validate the virtqueue number, which allows guest users to cause a denial of service (guest crash) and possibly execute arbitrary code via a negative number in the Queue Notify field of the Virtio Header, which bypasses a signed comparison.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/kvm | ||
| debian/qemu-kvm | ||
| debian/qemu-kvm | <=0.12.5+dfsg-5+squeeze3<=0.14.1+dfsg-1 | 0.14.1+dfsg-2 0.12.5+dfsg-5+squeeze4 |
| QEMU KVM | <=0.14.0 | |
| QEMU KVM | =0.12 |
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Reference Links
- http://secunia.com/advisories/45158
- http://www.osvdb.org/74751
- http://ubuntu.com/usn/usn-1165-1
- http://rhn.redhat.com/errata/RHSA-2011-0919.html
- http://www.openwall.com/lists/oss-security/2011/06/29/15
- http://www.openwall.com/lists/oss-security/2011/06/28/13
- https://hermes.opensuse.org/messages/9605323
- http://secunia.com/advisories/45170
- http://secunia.com/advisories/45301
- http://secunia.com/advisories/44648
- http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00007.html
- http://secunia.com/advisories/44458
- https://www.debian.org/security/2011/dsa-2270
- http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commitdiff%3Bh=7157e2e23e89adcd436caeab31fdd6b47eded377
- http://patchwork.ozlabs.org/patch/94604/
- https://rhn.redhat.com/errata/RHSA-2011-0919.html
- https://bugzilla.redhat.com/show_bug.cgi?id=717399
- https://security-tracker.debian.org/tracker/CVE-2011-2512
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631975
Frequently Asked Questions
What is the severity of CVE-2011-2512?
CVE-2011-2512 has a moderate severity level due to its potential to cause denial of service and arbitrary code execution.
How do I fix CVE-2011-2512?
To fix CVE-2011-2512, upgrade qemu-kvm to version 0.14.1+dfsg-2 or higher.
Which versions of qemu-kvm are affected by CVE-2011-2512?
qemu-kvm versions up to and including 0.14.0 are affected by CVE-2011-2512.
Can CVE-2011-2512 lead to guest crashes?
Yes, CVE-2011-2512 can allow guest users to cause a denial of service, leading to guest crashes.
Who is vulnerable to CVE-2011-2512?
Users running qemu-kvm versions 0.14.0 and earlier are vulnerable to CVE-2011-2512.
- collector/redhat-bugzilla
- alias/CVE-2011-2512
- collector/security-tracker-debian
- collector/debian-bugs
- agent/type
- agent/first-publish-date
- agent/remedy
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/references
- agent/last-modified-date
- agent/description
- agent/severity
- agent/author
- agent/event
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-historical
- agent/tags
- agent/softwarecombine
- agent/source
- package-manager/debian
- vendor/kvm group
- canonical/qemu kvm
- version/qemu kvm/0.14.0
- version/qemu kvm/0.12