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Vulnerability record · CVE-2009-3939 · published 16 November 2009

CVE-2009-3939: Linux kernel incorrect permission assignment vulnerability

Linux · Linux Kernel

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.

7.1 CVSS 3.1 High EPSS 0.44% · top 63.9% CWE-732 · Incorrect permission assignment
7.1CVSS 3.1 base score, v2 6.6
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
18Affected product versions listed by NVD
46References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected products

18 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00002.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00000.html Mailing List
http://osvdb.org/60201 Broken Link
http://secunia.com/advisories/37909 Broken Link
http://secunia.com/advisories/38017 Broken Link
http://secunia.com/advisories/38276 Broken Link
http://secunia.com/advisories/38492 Broken Link
http://secunia.com/advisories/38779 Broken Link
http://support.avaya.com/css/P8/documents/100073666 Third Party Advisory
http://www.debian.org/security/2010/dsa-1996 Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/11/13/1 Mailing List
http://www.securityfocus.com/bid/37019 Broken LinkThird Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/usn-864-1 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=526068 ExploitIssue Tracking
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10310 Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7540 Broken Link
https://rhn.redhat.com/errata/RHSA-2010-0046.html Third Party Advisory
https://rhn.redhat.com/errata/RHSA-2010-0095.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00002.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00000.html Mailing List
http://osvdb.org/60201 Broken Link
http://secunia.com/advisories/37909 Broken Link
http://secunia.com/advisories/38017 Broken Link
http://secunia.com/advisories/38276 Broken Link
http://secunia.com/advisories/38492 Broken Link
http://secunia.com/advisories/38779 Broken Link
http://support.avaya.com/css/P8/documents/100073666 Third Party Advisory
http://www.debian.org/security/2010/dsa-1996 Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/11/13/1 Mailing List
http://www.securityfocus.com/bid/37019 Broken LinkThird Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2009-3939), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.