CVE-2009-4005 Memory corruption in n/a

What is CVE-2009-4005?

CVE-2009-4005 is a high-severity memory corruption vulnerability in Linux kernel, published on 20 Nov 2009. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The collect_rx_frame function in drivers/isdn/hisax/hfc_usb.c in the Linux kernel before 2.6.32-rc7 allows attackers to have an unspecified impact via a crafted HDLC packet that arrives over ISDN and triggers a buffer under-read.

Weakness: CWE-119

Which versions are affected by CVE-2009-4005?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2009-4005?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2009-4005 being exploited?

There is no known exploitation of CVE-2009-4005 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-6xq3-fgp7-hfp8.