CVE-2012-4535
Published Nov 21, 2012 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
Xen 3.4 through 4.2, and possibly earlier versions, allows local guest OS administrators to cause a denial of service (Xen infinite loop and physical CPU consumption) by setting a VCPU with an "inappropriate deadline."
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
Xen 3.4 through 4.2, and possibly earlier versions, allows local guest OS administrators to cause a denial of service (Xen infinite loop and physical CPU consumption) by setting a VCPU with an "inappropriate deadline."
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- RHSA-2012:1540 ↗
- SUSE-SU-2014:0470 ↗
- 55082 ↗
- 1027759 ↗
- [Xen-announce] 20121113 Xen Security Advisory 20 (CVE-2012-4535) - Timer overflow DoS vulnerability ↗
- 51413 ↗
- 51200 ↗
- GLSA-201309-24 ↗
- DSA-2582 ↗
- 87298 ↗
- SUSE-SU-2012:1486 ↗
- [oss-security] 20121113 Xen Security Advisory 20 (CVE-2012-4535) - Timer overflow DoS vulnerability ↗
Record history
Published Nov 21, 2012 · Last refreshed Oct 23, 2026