How severe is CVE-2011-2512?

CVE-2011-2512 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2011-2512 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-2512?

CVE-2011-2512 primarily affects Kvm Group Qemu-kvm. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-2512?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-2512 published?

CVE-2011-2512 was published on 2012-06-21 and last updated on 2026-06-16.

CVE-2011-2512

CVE-2011-2512 is a medium-severity vulnerability in Kvm Group Qemu-kvm with a CVSS 2.0 base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.8)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Kvm Group Qemu-kvm
Published: 2012-06-21
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2011-2512?: 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.
How severe is CVE-2011-2512?: CVE-2011-2512 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2011-2512 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-2512?: CVE-2011-2512 primarily affects Kvm Group Qemu-kvm. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-2512?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-2512 published?: CVE-2011-2512 was published on 2012-06-21 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:kvm_group:qemu-kvm:*:*:*:*:*:*:*:*
cpe:2.3:a:kvm_group:qemu-kvm:0.12:*:*:*:*:*:*:*

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