What is CVE-2009-4005?

CVE-2009-4005 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10, classified as a Buffer Overflow flaw (CWE-119). CVE-2009-4005 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-4005?

CVE-2009-4005 has a CVSS score of 7.2 out of 10, rated High severity. The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.

Is there a patch available for CVE-2009-4005?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-4005 patch availability.

Is CVE-2009-4005 actively exploited?

CVE-2009-4005 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2009-4005

High

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.

Package Linux Kernel

Published 2009-11-20

Last modified 2026-04-23

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

7.2

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

Availability

Vector string

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

Weakness type

CWE-119

CVE-2009-4005 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

References

19 total

Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7

Vendor Advisory
Vupen
http://www.vupen.com/english/advisories/2009/3267

Patch Vendor Advisory
Securityfocus
http://www.securityfocus.com/bid/37036

Patch
Kernel Git
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=286e633ef0ff5bb63c07b4516665da8004966fec
Lists
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html

Showing 5 of 19 references View all on NVD

Details

CVE ID CVE-2009-4005

Severity High

CVSS score 7.2 / 10

CVSS version 2.0

Published 2009-11-20

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-4005?

CVE-2009-4005 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . CVE-2009-4005 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-4005?

CVE-2009-4005 has a CVSS score of 7.2 out of 10, rated High severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.
Is there a patch available for CVE-2009-4005?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-4005 patch availability.
Is CVE-2009-4005 actively exploited?

No. CVE-2009-4005 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.