CVE-2009-1337

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 1%CVSS: —Exploit: NoneExposed: 0

A fix is available — apply it.

The exit_notify function in kernel/exit.c in the Linux kernel before 2.6.30-rc1 does not restrict exit signals when the CAP_KILL capability is held, which allows local users to send an arbitrary signal to a process by running a program that modifies the exit_signal field and then uses an exec system call to launch a setuid application.

CVSS v3
—
EG Score
0.0(none)
EG Risk
0
EPSS
66.4%
KEV
Not listed

Published

April 22, 2009

Last Modified

April 23, 2026

References (98)

Vendor Advisories for CVE-2009-1337(1)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-2.6.27-14-virtual (2.6.27-14.35) @ intrepid2026-05-30ubuntu
redhatkernel-0:2.4.21-63.EL2009-11-03redhat
redhatkernel-0:2.6.9-78.0.24.EL2009-06-02redhat
redhatkernel-0:2.6.9-89.EL2009-05-18redhat
redhatkernel-0:2.6.18-128.1.10.el52009-05-07redhat
redhatkernel-rt-0:2.6.24.7-111.el5rt2009-04-29redhat

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.

Additional Vendor Advisories

(5)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 9× in last 7d / 38× 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. 2026-07-23 00:36 UTCEG score recompute
  2. 2026-07-23 00:03 UTCEG score recompute
  3. 2026-07-22 21:42 UTCEG score recompute
  4. 2026-07-22 14:03 UTCEPSS rescore
  5. 2026-07-21 15:20 UTCEPSS rescore
  6. 2026-07-20 17:03 UTCEPSS rescore
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  1. 2026-06-30 23:19 UTCEPSS rescore
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  50. 2026-05-31 22:28 UTCEPSS rescore
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  52. 2026-05-31 00:13 UTCEPSS rescore
  53. 2026-05-31 00:13 UTCEPSS rescore
  54. 2026-05-30 17:08 UTCEG score recompute
  55. 2026-05-30 17:08 UTCVendor advisory
  56. 2026-05-30 17:08 UTCGHSA enrichment
  57. 2026-05-29 13:40 UTCEPSS rescore
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  70. 2026-05-20 22:37 UTCEPSS rescore
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  74. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-8369✓ verified
    First seen Apr 8, 2009

    Linux Kernel < 2.6.29 - 'exit_notify()' Local Privilege Escalation

    Open source ↗

Related CVEs(same vendor)

Frequently asked(4)

What is CVE-2009-1337?
CVE-2009-1337 is a none vulnerability published on April 22, 2009. The exitnotify function in kernel/exit.c in the Linux kernel before 2.6.30-rc1 does not restrict exit signals when the CAPKILL capability is held, which allows local users to send an arbitrary signal to a process by running a program that modifies the exit_signal field and then uses an exec system…
When was CVE-2009-1337 disclosed?
CVE-2009-1337 was first published in the National Vulnerability Database on April 22, 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-2009-1337 actively exploited?
CVE-2009-1337 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 66.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2009-1337?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-1337, 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.

Dependency Blast Radius

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