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TI-2011-01546 Aliases CVE-2011-1767GHSA-44x9-p5gj-h8x2

net/ipv4/ip_gre.c in the Linux kernel before 2.6.34, when ip_gre is configured as a…

Priority LOW 30Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · None · Complete
Fix status
Partial Red Hat: 2 fixed, 1 without a fix

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

Summary

net/ipv4/ip_gre.c in the Linux kernel before 2.6.34, when ip_gre is configured as a module, allows remote attackers to cause a denial of service (OOPS) by sending a packet during module loading.

Why it matters now

EPSS 0.02798 86th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 2 fixed, 1 without a fix

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 · 21

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 2.6.33.20VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33:*:*:*:*:*:*:*2.6.33VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.1:*:*:*:*:*:*:*2.6.33.1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.2:*:*:*:*:*:*:*2.6.33.2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.3:*:*:*:*:*:*:*2.6.33.3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.4:*:*:*:*:*:*:*2.6.33.4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.5:*:*:*:*:*:*:*2.6.33.5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.6:*:*:*:*:*:*:*2.6.33.6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.7:*:*:*:*:*:*:*2.6.33.7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.8:*:*:*:*:*:*:*2.6.33.8VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 2.6.33.20 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33:*:*:*:*:*:*:* Versions 2.6.33 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.1:*:*:*:*:*:*:* Versions 2.6.33.1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.2:*:*:*:*:*:*:* Versions 2.6.33.2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.3:*:*:*:*:*:*:* Versions 2.6.33.3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.4:*:*:*:*:*:*:* Versions 2.6.33.4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.5:*:*:*:*:*:*:* Versions 2.6.33.5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.6:*:*:*:*:*:*:* Versions 2.6.33.6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.7:*:*:*:*:*:*:* Versions 2.6.33.7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.8:*:*:*:*:*:*:* Versions 2.6.33.8 Vulnerable ·Linux
Show 11 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:2.6.33.9:*:*:*:*:*:*:*2.6.33.9VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.10:*:*:*:*:*:*:*2.6.33.10VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.11:*:*:*:*:*:*:*2.6.33.11VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.12:*:*:*:*:*:*:*2.6.33.12VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.13:*:*:*:*:*:*:*2.6.33.13VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.14:*:*:*:*:*:*:*2.6.33.14VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.15:*:*:*:*:*:*:*2.6.33.15VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.16:*:*:*:*:*:*:*2.6.33.16VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.17:*:*:*:*:*:*:*2.6.33.17VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.18:*:*:*:*:*:*:*2.6.33.18VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.33.19:*:*:*:*:*:*:*2.6.33.19VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.9:*:*:*:*:*:*:* Versions 2.6.33.9 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.10:*:*:*:*:*:*:* Versions 2.6.33.10 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.11:*:*:*:*:*:*:* Versions 2.6.33.11 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.12:*:*:*:*:*:*:* Versions 2.6.33.12 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.13:*:*:*:*:*:*:* Versions 2.6.33.13 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.14:*:*:*:*:*:*:* Versions 2.6.33.14 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.15:*:*:*:*:*:*:* Versions 2.6.33.15 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.16:*:*:*:*:*:*:* Versions 2.6.33.16 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.17:*:*:*:*:*:*:* Versions 2.6.33.17 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.18:*:*:*:*:*:*:* Versions 2.6.33.18 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.33.19:*:*:*:*:*:*:* Versions 2.6.33.19 Vulnerable ·Linux

Remediation

Red Hat 2 advisories

  • RHSA-2011:1253 Released 2011-09-12 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-2.6.33.9-rt31.75.el6rt, kernel-rt-debug-2.6.33.9-rt31.75.el6rt, kernel-rt-debug-devel-2.6.33.9-rt31.75.el6rt +7
  • RHSA-2011:0928 Released 2011-07-12 · Red Hat rating Moderate
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-131.6.1.el6, kernel-bootwrapper-2.6.32-131.6.1.el6, kernel-debug-2.6.32-131.6.1.el6 +8

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise MRG 1AffectedNo fix yet
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2011:0928
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2011:1253

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-1767
  2. 2026-10-03 Alias added: GHSA-44x9-p5gj-h8x2

References

Exploit 1

Other 4

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

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