CVE-2015-4164
Published Jun 15, 2015 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
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
- 75149 ↗
- DSA-3286 ↗
- SUSE-SU-2015:1156 ↗
- SUSE-SU-2015:1643 ↗
- 1032569 ↗
- SUSE-SU-2015:1206 ↗
- SUSE-SU-2015:1157 ↗
- support.citrix.com ↗
- SUSE-SU-2015:1045 ↗
- xenbits.xen.org ↗
- GLSA-201604-03 ↗
- SUSE-SU-2015:1042 ↗
Record history
Published Jun 15, 2015 · Last refreshed Nov 3, 2026