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CVE-2009-3556

12
FAUCET Score

CVE-2009-3556 describes a local privilege escalation vulnerability in specific Red Hat configurations of the qla2xxx driver within the Linux kernel 2.6.18 on RHEL 5, particularly when NPIV hardware is in use. This misconfiguration sets world-writable permissions on vport_create and vport_delete files under /sys/class/scsi_host/, allowing local users to arbitrarily modify SCSI host attributes. The vulnerability has a low CVSS score of 1.9, indicating a local attack vector with medium complexity and a potential impact limited to integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.6.18CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.18:*:*:*:*:*:*:*
5CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

1.9LOW

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 71st percentile among its peer group of 747 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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 (1)

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-2009-3556Moderate

kernel: qla2xxx NPIV vport management pseudofiles are world writable

Jan 19, 2010

References

lists.opensuse.org / opensuse-security-announce/2010-03/msg00007.html
bugzilla.redhat.com / show_bug.cgi
exchange.xforce.ibmcloud.com / vulnerabilities/55809
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6744
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9738
rhn.redhat.com / errata/RHSA-2010-0046.html
rhn.redhat.com / errata/RHSA-2010-0095.html
support.avaya.com / css/P8/documents/100073666
openwall.com / lists/oss-security/2010/01/20/2