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TI-2011-03628 Aliases CVE-2011-4110GHSA-6cq9-237h-c3vq

The user_update function in security/keys/user_defined.c in the Linux kernel 2.6 allows…

Priority LOW 12CWE-264Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · Partial
Fix status
Partial Red Hat: 12 fixed, 1 without a fix

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-264.

Summary

The user_update function in security/keys/user_defined.c in the Linux kernel 2.6 allows local users to cause a denial of service (NULL pointer dereference and kernel oops) via vectors related to a user-defined key and "updating a negative key into a fully instantiated key."

Why it matters now

EPSS 0.00467 40th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 5 advisoriesRed Hat: 12 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 · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:2.6:*:*:*:*:*:*:*2.6VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:2.6:*:*:*:*:*:*:* Versions 2.6 Vulnerable ·Linux

Remediation

Red Hat 5 advisories

  • RHSA-2012:0333 Released 2012-02-23 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-3.0.18-rt34.53.el6rt, kernel-rt-debug-3.0.18-rt34.53.el6rt, kernel-rt-debug-devel-3.0.18-rt34.53.el6rt +7
  • RHSA-2012:0116 Released 2012-02-15 · Red Hat rating Moderate
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server EUS (v. 6.1) kernel-2.6.32-131.25.1.el6, kernel-bootwrapper-2.6.32-131.25.1.el6, kernel-debug-2.6.32-131.25.1.el6 +8
  • RHSA-2012:0010 Released 2012-01-10 · 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-rt31.79.el6rt, kernel-rt-debug-2.6.33.9-rt31.79.el6rt, kernel-rt-debug-devel-2.6.33.9-rt31.79.el6rt +7
Show 2 more Red Hat advisories
  • RHSA-2011:1530 Released 2011-12-05 · Red Hat rating Moderate
    Red Hat Enterprise Linux 6 kernel security, bug fix and enhancement update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-220.el6, kernel-debug-2.6.32-220.el6, kernel-debug-devel-2.6.32-220.el6 +5
    • Red Hat Enterprise Linux Desktop Optional (v. 6) kernel-2.6.32-220.el6, python-perf-2.6.32-220.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-220.el6, kernel-debug-2.6.32-220.el6, kernel-debug-devel-2.6.32-220.el6 +5
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel-2.6.32-220.el6, python-perf-2.6.32-220.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-220.el6, kernel-bootwrapper-2.6.32-220.el6, kernel-debug-2.6.32-220.el6 +8
    • Red Hat Enterprise Linux Server Optional (v. 6) kernel-2.6.32-220.el6, python-perf-2.6.32-220.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-220.el6, kernel-debug-2.6.32-220.el6, kernel-debug-devel-2.6.32-220.el6 +5
    • Red Hat Enterprise Linux Workstation Optional (v. 6) kernel-2.6.32-220.el6, python-perf-2.6.32-220.el6
  • RHSA-2011:1479 Released 2011-11-29 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux (v. 5 server) kernel-2.6.18-274.12.1.el5, kernel-2.6.18-274.12.1.el5.ia64, kernel-PAE-2.6.18-274.12.1.el5 +18
    • Red Hat Enterprise Linux Desktop (v. 5 client) kernel-2.6.18-274.12.1.el5, kernel-PAE-2.6.18-274.12.1.el5, kernel-PAE-devel-2.6.18-274.12.1.el5 +8

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 4AffectedNo fix yet
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2011:1479
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2011:1479
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2011:1530
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2011:1530
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2011:1530
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2011:1530
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2011:1530
Red Hat Enterprise Linux Server EUS (v. 6.1)Fixed RHSA-2012:0116
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2011:1530
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2011:1530
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2011:1530
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2012:0010, RHSA-2012:0333

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-4110
  2. 2026-10-03 Alias added: GHSA-6cq9-237h-c3vq

References

Exploit 1

Patch 1

Advisory 4

Other 3

  • 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