CVE-2009-4138 Null dereference in n/a

What is CVE-2009-4138?

CVE-2009-4138 is a medium-severity vulnerability in Linux kernel, published on 16 Dec 2009. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-399

Which versions are affected by CVE-2009-4138?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2009-4138?

Upgrade to a fixed version.

Is CVE-2009-4138 being exploited?

There is no known exploitation of CVE-2009-4138 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-xfrx-mv2w-4mhc.