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TI-2012-01909 Aliases CVE-2012-2136GHSA-5f6p-hhwm-3p3h

The sock_alloc_send_pskb function in net/core/sock.c in the Linux kernel before 3.4.5…

Priority LOW 32CWE-20Published · Updated

Key facts

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

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

Summary

The sock_alloc_send_pskb function in net/core/sock.c in the Linux kernel before 3.4.5 does not properly validate a certain length value, which allows local users to cause a denial of service (heap-based buffer overflow and system crash) or possibly gain privileges by leveraging access to a TUN/TAP device.

Why it matters now

EPSS 0.0056 46th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 3 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 · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 3.0.37; 3.1 to before 3.2.23; 3.3 to before 3.4.5VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 3.0.37; 3.1 to before 3.2.23; 3.3 to before 3.4.5 Vulnerable ·Linux

Remediation

Red Hat 3 advisories

  • RHSA-2012:1087 Released 2012-07-17 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux EUS (v. 5.6 server) kernel-2.6.18-238.40.1.el5, kernel-2.6.18-238.40.1.el5.ia64, kernel-PAE-2.6.18-238.40.1.el5 +18
  • RHSA-2012:0743 Released 2012-06-18 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-220.23.1.el6, kernel-debug-2.6.32-220.23.1.el6, kernel-debug-devel-2.6.32-220.23.1.el6 +5
    • Red Hat Enterprise Linux Desktop Optional (v. 6) kernel-2.6.32-220.23.1.el6, python-perf-2.6.32-220.23.1.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-220.23.1.el6, kernel-debug-2.6.32-220.23.1.el6, kernel-debug-devel-2.6.32-220.23.1.el6 +5
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel-2.6.32-220.23.1.el6, python-perf-2.6.32-220.23.1.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-220.23.1.el6, kernel-bootwrapper-2.6.32-220.23.1.el6, kernel-debug-2.6.32-220.23.1.el6 +8
    • Red Hat Enterprise Linux Server Optional (v. 6) kernel-2.6.32-220.23.1.el6, python-perf-2.6.32-220.23.1.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-220.23.1.el6, kernel-debug-2.6.32-220.23.1.el6, kernel-debug-devel-2.6.32-220.23.1.el6 +5
    • Red Hat Enterprise Linux Workstation Optional (v. 6) kernel-2.6.32-220.23.1.el6, python-perf-2.6.32-220.23.1.el6
  • RHSA-2012:0690 Released 2012-05-29 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux (v. 5 server) kernel-2.6.18-308.8.1.el5, kernel-2.6.18-308.8.1.el5.ia64, kernel-PAE-2.6.18-308.8.1.el5 +18
    • Red Hat Enterprise Linux Desktop (v. 5 client) kernel-2.6.18-308.8.1.el5, kernel-PAE-2.6.18-308.8.1.el5, kernel-PAE-devel-2.6.18-308.8.1.el5 +8

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2012:0690
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2012:0690
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2012:0743
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2012:0743
Red Hat Enterprise Linux EUS (v. 5.6 server)Fixed RHSA-2012:1087
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2012:0743
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2012:0743
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2012:0743
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2012:0743
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2012:0743
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2012:0743
Not affected: 1 product
  • Red Hat Enterprise MRG 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2012-2136
  2. 2026-10-03 Alias added: GHSA-5f6p-hhwm-3p3h

References

Exploit 1

Advisory 5

Other 2

  • 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