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TI-2011-01911 Aliases CVE-2011-2189GHSA-cwc9-v946-jvqj

net/core/net_namespace.c in the Linux kernel 2.6.32 and earlier does not properly handle…

Priority MEDIUM 50CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-400.

Summary

net/core/net_namespace.c in the Linux kernel 2.6.32 and earlier does not properly handle a high rate of creation and cleanup of network namespaces, which makes it easier for remote attackers to cause a denial of service (memory consumption) via requests to a daemon that requires a separate namespace per connection, as demonstrated by vsftpd.

Why it matters now

EPSS 0.17854 97th percentileScored 2026-11-07
Public exploit Yes 4 exploit referencesTagged by NVD
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 · 10

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 2.6.32VulnerableLinux
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*2.0VulnerableRed Hat
cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:*:*:*:*10.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*10.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*11.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*11.10VulnerableCanonical
cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*5.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*6.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 2.6.32 Vulnerable ·Linux
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Red Hat
  • cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:*:*:*:* Versions 10.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:* Versions 10.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:* Versions 11.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:* Versions 11.10 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise MRG 2AffectedNo fix yet
Not affected: 2 products
  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-2189
  2. 2026-10-03 Alias added: GHSA-cwc9-v946-jvqj

References

Exploit 4

Patch 1

Advisory 4

Other 5

Sources

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