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CVE-2009-3889

19
FAUCET Score

CVE-2009-3889 describes a local privilege escalation vulnerability in the megaraid_sas driver within the Linux kernel before version 2.6.27. The dbg_lvl file, which controls driver behavior and logging, had world-writable permissions, allowing any local user to modify it. This flaw carries a CVSS score of 6.6, indicating high impact on integrity and availability with low attack complexity, but requires local access. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this decade-old vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.26CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
2.6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:*
2.6.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.1:*:*:*:*:*:*:*
2.6.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.2:*:*:*:*:*:*:*
2.6.10CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.6MEDIUM

AV:L/AC:L/Au:N/C:N/I:C/A:C

Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
9.2
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.53%
Probability of exploitation in next 30 days
EPSS Percentile
41.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0053 is in the 78th percentile among its peer group of 3,052 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: MRG for RHEL-5Fixed in: kernel-rt-0:2.6.24.7-139.el5rt
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kernel-0:2.6.9-89.0.20.EL
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-164.11.1.el5
View patch

Vendor Advisories (1)

redhatCVE-2009-3889Moderate

kernel: megaraid_sas permissions in sysfs

Sep 28, 2009

References

git.kernel.org
lists.opensuse.org / opensuse-security-announce/2009-12/msg00002.html
lists.opensuse.org / opensuse-security-announce/2009-12/msg00005.html
lists.opensuse.org / opensuse-security-announce/2010-02/msg00007.html
osvdb.org / 60202
bugzilla.redhat.com / show_bug.cgi
Exploit
secunia.com / advisories/37909
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11018
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7163
rhn.redhat.com / errata/RHSA-2010-0046.html
rhn.redhat.com / errata/RHSA-2010-0095.html
support.avaya.com / css/P8/documents/100073666
debian.org / security/2010/dsa-2005
kernel.org / pub/linux/kernel/v2.6/ChangeLog-2.6.27
Vendor Advisory
openwall.com / lists/oss-security/2009/11/13/1
openwall.com / lists/oss-security/2009/11/13/4
securityfocus.com / bid/37019
ubuntu.com / usn/usn-864-1