CVE-2009-3939

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory published 2022-05-02. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

A fix is available — apply it.

The poll_mode_io file for the megaraid_sas driver in the Linux kernel 2.6.31.6 and earlier has world-writable permissions, which allows local users to change the I/O mode of the driver by modifying this file.

CVSS v3
7.1
EG Score
7.1(medium)
EPSS
36.2%
KEV
Not listed

Published

November 16, 2009

Last Modified

April 23, 2026

References (46)

Vendor Advisories for CVE-2009-3939(3)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-2.6.28-17-lpia (2.6.28-17.58) @ jaunty2026-05-30ubuntu
redhatkernel-0:2.6.9-89.0.20.EL2010-02-02redhat
redhatkernel-0:2.6.18-164.11.1.el52010-01-19redhat
redhatkernel-rt-0:2.6.24.7-139.el5rt2009-12-03redhat

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(1)

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

Additional Vendor Advisories

(1)

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 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 21:43 UTCEG score recompute
  2. 2026-07-22 14:03 UTCEPSS rescore
  3. 2026-07-21 15:20 UTCEPSS rescore
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  52. 2026-05-30 14:36 UTCEG score recompute
  53. 2026-05-30 14:36 UTCVendor advisory
  54. 2026-05-30 14:36 UTCGHSA enrichment
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Frequently asked(5)

What is CVE-2009-3939?
CVE-2009-3939 is a high vulnerability published on November 16, 2009. The pollmodeio file for the megaraid_sas driver in the Linux kernel 2.6.31.6 and earlier has world-writable permissions, which allows local users to change the I/O mode of the driver by modifying this file.
When was CVE-2009-3939 disclosed?
CVE-2009-3939 was first published in the National Vulnerability Database on November 16, 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-2009-3939 actively exploited?
CVE-2009-3939 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2009-3939?
CVE-2009-3939 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2009-3939?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-3939, 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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