CVE-2009-4138

Medium

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.

Package Linux Kernel
Published 2009-12-16
Last modified 2026-04-23
CVSS version 2.0
Patch available
Awaiting data

CVSS 2.0 score

4.7

out of 10
Medium
Attack Vector
Local
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
None
Integrity
None
Availability
Vector string
AV:L/AC:M/Au:N/C:N/I:N/A:C

Weakness type

CWE-399

CVE-2009-4138 is classified as CWE-399

See CWE-399 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2009-4138 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

4 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2009-4138?

    CVE-2009-4138 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 . CVE-2009-4138 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2009-4138?

    CVE-2009-4138 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:M/Au:N/C:N/I:N/A:C .

  • Is there a patch available for CVE-2009-4138?

    No patch is currently available for CVE-2009-4138. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2009-4138 actively exploited?

    No — CVE-2009-4138 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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