Read the docs
TI-2009-01321 Aliases CVE-2009-1388GHSA-674m-p5v7-mcqp

The ptrace_start function in kernel/ptrace.c in the Linux kernel 2.6.18 does not properly…

Priority LOW 25CWE-667Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-667 and the CVSS impact.

Summary

The ptrace_start function in kernel/ptrace.c in the Linux kernel 2.6.18 does not properly handle simultaneous execution of the do_coredump function, which allows local users to cause a denial of service (deadlock) via vectors involving the ptrace system call and a coredumping thread.

Why it matters now

EPSS 0.00364 30th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

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:2.6.18:*:*:*:*:*:*:*2.6.18VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:2.6.18:*:*:*:*:*:*:* Versions 2.6.18 Vulnerable ·Linux

Remediation

Red Hat 1 advisory

  • RHSA-2009:1193 Released 2009-08-04 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux (v. 5 server) kernel-2.6.18-128.4.1.el5, kernel-2.6.18-128.4.1.el5.ia64, kernel-PAE-2.6.18-128.4.1.el5 +18
    • Red Hat Enterprise Linux Desktop (v. 5 client) kernel-2.6.18-128.4.1.el5, kernel-PAE-2.6.18-128.4.1.el5, kernel-PAE-devel-2.6.18-128.4.1.el5 +8
    • Red Hat Enterprise Linux EUS (v. 5.3 server) kernel-2.6.18-128.4.1.el5, kernel-2.6.18-128.4.1.el5.ia64, kernel-PAE-2.6.18-128.4.1.el5 +18

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2009:1193
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2009:1193
Red Hat Enterprise Linux EUS (v. 5.3 server)Fixed RHSA-2009:1193

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-1388
  2. 2026-10-03 Alias added: GHSA-674m-p5v7-mcqp

References

Patch 4

Advisory 2

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