What is CVE-2007-2172?

CVE-2007-2172 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10, classified as a Improper Input Validation flaw (CWE-20). CVE-2007-2172 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2007-2172?

CVE-2007-2172 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is AV:L/AC:M/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2007-2172?

No patch is currently available for CVE-2007-2172. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2007-2172 actively exploited?

CVE-2007-2172 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2007-2172

Medium

A typo in Linux kernel 2.6 before 2.6.21-rc6 and 2.4 before 2.4.35 causes RTA_MAX to be used as an array size instead of RTN_MAX, which leads to an "out of bound access" by the (1) dn_fib_props (dn_fib.c, DECNet) and (2) fib_props (fib_semantics.c, IPv4) functions.

Package Linux Kernel

Published 2007-04-22

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-20

CVE-2007-2172 is a Improper Input Validation vulnerability

What is Improper Input Validation?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2007-2172 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.21-rc6

Vendor Advisory
Red Hat
http://rhn.redhat.com/errata/RHSA-2007-0488.html

Third Party Advisory
Secunia
http://secunia.com/advisories/25068

Third Party Advisory
Secunia
http://secunia.com/advisories/25288

Third Party Advisory
Secunia
http://secunia.com/advisories/25392

Third Party Advisory
Secunia
http://secunia.com/advisories/25838

Third Party Advisory
Secunia
http://secunia.com/advisories/26289

Third Party Advisory
Secunia
http://secunia.com/advisories/26450

Third Party Advisory
Secunia
http://secunia.com/advisories/26620

Third Party Advisory
Secunia
http://secunia.com/advisories/26647

Third Party Advisory
Secunia
http://secunia.com/advisories/27913

Third Party Advisory
Secunia
http://secunia.com/advisories/29058

Third Party Advisory
Secunia
http://secunia.com/advisories/33280

Third Party Advisory
Support
http://support.avaya.com/elmodocs2/security/ASA-2007-287.htm

Third Party Advisory
Debian Security
http://www.debian.org/security/2007/dsa-1356

Third Party Advisory
Debian Security
http://www.debian.org/security/2007/dsa-1363

Third Party Advisory
Debian Security
http://www.debian.org/security/2008/dsa-1503

Third Party Advisory
Debian Security
http://www.debian.org/security/2008/dsa-1504

Third Party Advisory
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.35

Vendor Advisory
Mail-Archive
http://www.mail-archive.com/git-commits-head%40vger.kernel.org/msg08269.html
Mail-Archive
http://www.mail-archive.com/git-commits-head%40vger.kernel.org/msg08270.html
Mandriva
http://www.mandriva.com/security/advisories?name=MDKSA-2007:171

Third Party Advisory
Mandriva
http://www.mandriva.com/security/advisories?name=MDKSA-2007:196

Third Party Advisory
Mandriva
http://www.mandriva.com/security/advisories?name=MDKSA-2007:216

Third Party Advisory
Red Hat
http://www.redhat.com/support/errata/RHSA-2007-0347.html

Third Party Advisory
Red Hat
http://www.redhat.com/support/errata/RHSA-2007-1049.html

Third Party Advisory
Red Hat
http://www.redhat.com/support/errata/RHSA-2008-0787.html

Third Party Advisory
Ubuntu Security
http://www.ubuntu.com/usn/usn-464-1

Third Party Advisory
Vupen
http://www.vupen.com/english/advisories/2007/2690

Third Party Advisory
Exchange
https://exchange.xforce.ibmcloud.com/vulnerabilities/33979

Third Party Advisory VDB Entry
Oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10764

Third Party Advisory
Kernel patch commit
http://www.securityfocus.com/bid/23447
Patch

Details

CVE ID CVE-2007-2172

Severity Medium

CVSS score 4.7 / 10

CVSS version 2.0

Published 2007-04-22

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2007-2172?

CVE-2007-2172 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as an Improper Input Validation flaw (CWE-20) . CVE-2007-2172 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2007-2172?

CVE-2007-2172 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-2007-2172?

No patch is currently available for CVE-2007-2172. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2007-2172 actively exploited?

No — CVE-2007-2172 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Improper Input Validation (CWE-20)?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. View CWE-20 on MITRE CWE →