Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kvm Group | Qemu-Kvm | <= 0.14.0 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commitdiff%3Bh=7157e2e23e89ad
- http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00007.html
- http://rhn.redhat.com/errata/RHSA-2011-0919.html
- http://secunia.com/advisories/44458Vendor Advisory
- http://secunia.com/advisories/44648Vendor Advisory
- http://secunia.com/advisories/45158Vendor Advisory
- http://secunia.com/advisories/45170Vendor Advisory
- http://secunia.com/advisories/45301Vendor Advisory
- http://ubuntu.com/usn/usn-1165-1
- http://www.openwall.com/lists/oss-security/2011/06/28/13Patch
- http://www.openwall.com/lists/oss-security/2011/06/29/15Patch
- http://www.osvdb.org/74751
- https://hermes.opensuse.org/messages/9605323
- https://www.debian.org/security/2011/dsa-2270
- http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commitdiff%3Bh=7157e2e23e89ad
FAQ
What is CVE-2011-2512?
CVE-2011-2512 is a vulnerability with a CVSS score of 5.8 (MEDIUM). 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 arbitra...
How severe is CVE-2011-2512?
CVE-2011-2512 has been rated MEDIUM with a CVSS base score of 5.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-2512?
Check the references section above for vendor advisories and patch information. Affected products include: Kvm Group Qemu-Kvm.