CVE-2009-1388

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2022-05-02. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
28.9%
KEV
Not listed

Published

July 5, 2009

Last Modified

April 23, 2026

Advisory Details (9)

Auto-updated May 30, 2026
No patch confirmed yet. Sources: redhat.
redhat
https://bugzilla.redhat.com/attachment.cgi?id=346615
generic

VUPEN Security - Vulnerability Research and Intelligence

http://www.vupen.com/english/advisories/2009/3316
generic

Support Content Notification - Support Portal - Broadcom support portal

http://www.vmware.com/security/advisories/VMSA-2009-0016.html
generic
http://www.securityfocus.com/bid/35559
generic
http://www.securityfocus.com/archive/1/507985/100/0/threaded
generic

Support

http://www.redhat.com/support/errata/RHSA-2009-1193.html
generic

About Secunia Research | Flexera

http://secunia.com/advisories/37471
generic

About Secunia Research | Flexera

http://secunia.com/advisories/36131
generic

'[oss-security] CVE-2009-1388 kernel: do_coredump() vs ptrace_start() deadlock' - MARC

http://marc.info/?l=oss-security&m=124654277229434&w=2

Vendor Advisories for CVE-2009-1388(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:2.6.18-128.4.1.el52009-08-04redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 36× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 21:42 UTCEG score recompute
  2. 2026-07-22 14:03 UTCEPSS rescore
  3. 2026-07-21 15:20 UTCEPSS rescore
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  1. 2026-06-29 14:02 UTCEPSS rescore
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  50. 2026-05-31 00:13 UTCEPSS rescore
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  52. 2026-05-30 16:17 UTCEG score recompute
  53. 2026-05-30 16:17 UTCVendor advisory
  54. 2026-05-30 16:17 UTCGHSA enrichment
  55. 2026-05-29 13:40 UTCEPSS rescore
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  67. 2026-05-22 21:15 UTCEPSS rescore
  68. 2026-05-18 21:29 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2009-1388?
CVE-2009-1388 is a medium vulnerability published on July 5, 2009. The ptracestart function in kernel/ptrace.c in the Linux kernel 2.6.18 does not properly handle simultaneous execution of the docoredump function, which allows local users to cause a denial of service (deadlock) via vectors involving the ptrace system call and a coredumping thread.
When was CVE-2009-1388 disclosed?
CVE-2009-1388 was first published in the National Vulnerability Database on July 5, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-1388 actively exploited?
CVE-2009-1388 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2009-1388?
CVE-2009-1388 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2009-1388?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-1388, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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