CVE-2011-2512

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.

Category

5.8
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.68% Top 30%
Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://rhn.redhat.com/errata/RHSA-2011-0919.html vendor advisory
http://secunia.com/advisories/45170 third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2011/06/28/13 mailing list patch
http://secunia.com/advisories/44648 third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2011/06/29/15 mailing list patch
http://secunia.com/advisories/45301 third party advisory vendor advisory
http://secunia.com/advisories/45158 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00007.html vendor advisory
http://www.osvdb.org/74751 vdb entry
http://secunia.com/advisories/44458 third party advisory vendor advisory
http://ubuntu.com/usn/usn-1165-1 vendor advisory
https://www.debian.org/security/2011/dsa-2270 vendor advisory
https://hermes.opensuse.org/messages/9605323 vendor advisory
http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commitdiff%3Bh=7157e2e23e89adcd436caeab31fdd6b47eded377

Frequently Asked Questions

What is the severity of CVE-2011-2512?
CVE-2011-2512 has been scored as a medium severity vulnerability.
How to fix CVE-2011-2512?
To fix CVE-2011-2512, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-2512 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2011-2512 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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