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TI-2011-02554 Aliases CVE-2011-2901GHSA-596h-97jg-mfff

Off-by-one error in the __addr_ok macro in Xen 3.3 and earlier allows local 64 bit PV…

Priority LOW 26CWE-399Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
Low
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Complete
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-399 and the CVSS impact.

Summary

Off-by-one error in the __addr_ok macro in Xen 3.3 and earlier allows local 64 bit PV guest administrators to cause a denial of service (host crash) via unspecified hypercalls that ignore virtual-address bits.

Why it matters now

EPSS 0.0059 48th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

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 · 10

CPEVersionsRoleVendor
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*up to 3.3.0VulnerableXen
cpe:2.3:o:xen:xen:3.0.2:*:*:*:*:*:*:*3.0.2VulnerableXen
cpe:2.3:o:xen:xen:3.0.3:*:*:*:*:*:*:*3.0.3VulnerableXen
cpe:2.3:o:xen:xen:3.0.4:*:*:*:*:*:*:*3.0.4VulnerableXen
cpe:2.3:o:xen:xen:3.1.3:*:*:*:*:*:*:*3.1.3VulnerableXen
cpe:2.3:o:xen:xen:3.1.4:*:*:*:*:*:*:*3.1.4VulnerableXen
cpe:2.3:o:xen:xen:3.2.0:*:*:*:*:*:*:*3.2.0VulnerableXen
cpe:2.3:o:xen:xen:3.2.1:*:*:*:*:*:*:*3.2.1VulnerableXen
cpe:2.3:o:xen:xen:3.2.2:*:*:*:*:*:*:*3.2.2VulnerableXen
cpe:2.3:o:xen:xen:3.2.3:*:*:*:*:*:*:*3.2.3VulnerableXen
  • cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* Versions up to 3.3.0 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:3.0.2:*:*:*:*:*:*:* Versions 3.0.2 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:3.0.3:*:*:*:*:*:*:* Versions 3.0.3 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:3.0.4:*:*:*:*:*:*:* Versions 3.0.4 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:3.1.3:*:*:*:*:*:*:* Versions 3.1.3 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:3.1.4:*:*:*:*:*:*:* Versions 3.1.4 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:3.2.0:*:*:*:*:*:*:* Versions 3.2.0 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:3.2.1:*:*:*:*:*:*:* Versions 3.2.1 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:3.2.2:*:*:*:*:*:*:* Versions 3.2.2 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:3.2.3:*:*:*:*:*:*:* Versions 3.2.3 Vulnerable ·Xen

Remediation

Red Hat 2 advisories

  • RHSA-2011:1813 Released 2011-12-13 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux EUS (v. 5.6 server) kernel-2.6.18-238.31.1.el5, kernel-2.6.18-238.31.1.el5.ia64, kernel-PAE-2.6.18-238.31.1.el5 +14
  • RHSA-2011:1212 Released 2011-09-06 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux (v. 5 server) kernel-2.6.18-274.3.1.el5, kernel-2.6.18-274.3.1.el5.ia64, kernel-PAE-2.6.18-274.3.1.el5 +14
    • Red Hat Enterprise Linux Desktop (v. 5 client) kernel-2.6.18-274.3.1.el5, kernel-PAE-2.6.18-274.3.1.el5, kernel-PAE-devel-2.6.18-274.3.1.el5 +6

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2011:1212
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2011:1212
Red Hat Enterprise Linux EUS (v. 5.6 server)Fixed RHSA-2011:1813

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-2901
  2. 2026-10-03 Alias added: GHSA-596h-97jg-mfff

References

Advisory 2

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