CVE-2011-2512

Severity: medium (CVSS 5.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-06-21 · updated 2026-06-16
Weakness: CWE-20

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.

Affected products

Kvm Group Qemu-Kvm: through 0.14.0; 0.12

References

http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commitdiff%3Bh=7157e2e23e89adcd436caeab31fdd6b47eded377
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00007.html
http://rhn.redhat.com/errata/RHSA-2011-0919.html
http://secunia.com/advisories/44458
http://secunia.com/advisories/44648
http://secunia.com/advisories/45158
http://secunia.com/advisories/45170
http://secunia.com/advisories/45301
http://ubuntu.com/usn/usn-1165-1
http://www.openwall.com/lists/oss-security/2011/06/28/13
http://www.openwall.com/lists/oss-security/2011/06/29/15
http://www.osvdb.org/74751

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