CVE-2009-4138

CVE-2009-4138 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.7)
• EPSS exploit prediction: 0% (28th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-399
• Affected product: Linux Linux Kernel
• Published: 2009-12-16
• Last modified: 2026-06-16

Description

drivers/firewire/ohci.c in the Linux kernel before 2.6.32-git9, when packet-per-buffer mode is used, allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unknown other impact via an unspecified ioctl associated with receiving an ISO packet that contains zero in the payload-length field.

Frequently asked questions

What is CVE-2009-4138?

drivers/firewire/ohci.c in the Linux kernel before 2.6.32-git9, when packet-per-buffer mode is used, allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unknown other impact via an unspecified ioctl associated with receiving an ISO packet that contains zero in the payload-length field.

How severe is CVE-2009-4138?

CVE-2009-4138 has a CVSS 2.0 base score of 4.7, rated medium severity.

Is CVE-2009-4138 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4138?

CVE-2009-4138 primarily affects Linux Linux Kernel. In total, 338 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4138?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-4138 published?

CVE-2009-4138 was published on 2009-12-16 and last updated on 2026-06-16.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8c0c0cc2d9f4c523fde04bdfe41e4380dec8ee54
• http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html
• http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html
• http://patchwork.kernel.org/patch/66747/
• http://secunia.com/advisories/38017
• http://secunia.com/advisories/38276
• http://support.avaya.com/css/P8/documents/100073666
• http://www.debian.org/security/2010/dsa-2005
• http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git9.log
• http://www.openwall.com/lists/oss-security/2009/12/15/1
• http://www.securityfocus.com/bid/37339
• https://bugzilla.redhat.com/show_bug.cgi?id=547236
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7376
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9527
• https://rhn.redhat.com/errata/RHSA-2010-0046.html
• https://rhn.redhat.com/errata/RHSA-2010-0095.html

Affected products (338)

• cpe:2.3:o:linux:linux_kernel:*:rc8:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.8.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.9:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.10:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.9:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.10:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.11:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.11.12:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.12:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.12.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.12.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.12.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.12.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.12.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.12.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.13:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.13.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.13.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.13.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.13.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.13.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.14:*:*:*:*:*:*:*

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