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TI-2011-01542 Aliases CVE-2011-1763GHSA-2xx5-rm9h-fw44

The get_free_port function in Xen allows local authenticated DomU users to cause a denial…

Priority LOW 34Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
Low
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Complete · Complete · Complete
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

The get_free_port function in Xen allows local authenticated DomU users to cause a denial of service or possibly gain privileges via unspecified vectors involving a new event channel port.

Why it matters now

EPSS 0.00555 46th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:xen:xen:*:*:*:*:*:*:*:*all versionsVulnerableXen
  • cpe:2.3:a:xen:xen:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Xen

Remediation

Red Hat 1 advisory

  • RHSA-2011:0833 Released 2011-05-31 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux (v. 5.6.z server) kernel-2.6.18-238.12.1.el5, kernel-2.6.18-238.12.1.el5.ia64, kernel-PAE-2.6.18-238.12.1.el5 +14

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5.6.z server)Fixed RHSA-2011:0833

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-1763
  2. 2026-10-03 Alias added: GHSA-2xx5-rm9h-fw44

References

Advisory 1

Other 2

  • TI-2012-00210 The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix… CVSS 2.0HIGH 7.2
  • TI-2023-07042 Information disclosure through error messages in AMD Ryzen™ 3000 Series Desktop… CVSS 3.1MEDIUM 5.5
  • TI-2015-04333 The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used… CVSS 2.0HIGH 9.3
  • TI-2015-06741 The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows… CVSS 3.1CRITICAL 10.0
  • TI-2018-06436 A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures… CVSS 3.0HIGH 7.8
  • TI-2024-20522 x86: Incorrect logic for BTC/SRSO mitigations CVSS 3.1HIGH 7.5
See all 489 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences