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TI-2016-04542 Aliases CVE-2016-5242GHSA-2vf7-h2xh-7v4v

The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local guest…

Priority LOW 25Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion.

Why it matters now

EPSS 0.00342 27th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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 · 12

CPEVersionsRoleVendor
cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:*4.4.0VulnerableXen
cpe:2.3:o:xen:xen:4.4.0:rc1:*:*:*:*:*:*4.4.0 rc1VulnerableXen
cpe:2.3:o:xen:xen:4.4.1:*:*:*:*:*:*:*4.4.1VulnerableXen
cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:*4.4.2VulnerableXen
cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:*4.4.3VulnerableXen
cpe:2.3:o:xen:xen:4.4.4:*:*:*:*:*:*:*4.4.4VulnerableXen
cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:*4.5.0VulnerableXen
cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*4.5.1VulnerableXen
cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:*4.5.2VulnerableXen
cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:*4.5.3VulnerableXen
  • cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:* Versions 4.4.0 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:4.4.0:rc1:*:*:*:*:*:* Versions 4.4.0 rc1 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:4.4.1:*:*:*:*:*:*:* Versions 4.4.1 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:* Versions 4.4.2 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:* Versions 4.4.3 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:4.4.4:*:*:*:*:*:*:* Versions 4.4.4 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:* Versions 4.5.0 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:* Versions 4.5.1 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:* Versions 4.5.2 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:* Versions 4.5.3 Vulnerable ·Xen
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:*4.6.0VulnerableXen
cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:*4.6.1VulnerableXen
  • cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:* Versions 4.6.0 Vulnerable ·Xen
  • cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:* Versions 4.6.1 Vulnerable ·Xen

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

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

Not affected: 1 product
  • Red Hat Enterprise Linux 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-5242
  2. 2026-10-03 Alias added: GHSA-2vf7-h2xh-7v4v

References

Advisory 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