Linux Kernel 2.6.9 denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel 2.6.9. Affected by this issue is some unknown functionality. Such manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2006-2446. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.9 (Operating System) and classified as problematic. Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

Race condition between the kfree_skb and __skb_unlink functions in the socket buffer handling in Linux kernel 2.6.9, and possibly other versions, allows remote attackers to cause a denial of service (crash), as demonstrated using the TCP stress tests from the LTP test suite.

The bug was discovered 05/22/2006. The weakness was disclosed 08/15/2006 with Red Hat as Bug 192779 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2006-2446 since 05/18/2006. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 665 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 22276 (CentOS 4 : kernel (CESA-2006:0575)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115389 (Linux Kernel Unspecified Socket Buffer Handling Remote Denial of Service Vulnerability).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (22276), SecurityFocus (BID 19475†), OSVDB (28551†), Secunia (SA21465†) and Vulnerability Center (SBV-12534†). The entries VDB-2071, VDB-27880, VDB-30335 and VDB-30129 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 22276
Nessus Name: CentOS 4 : kernel (CESA-2006:0575)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 57407
OpenVAS Name: Debian Security Advisory DSA 1183-1 (kernel-source-2.4.27)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

10/19/2004 🔍
05/18/2006 +576 days 🔍
05/22/2006 +4 days 🔍
08/10/2006 +80 days 🔍
08/10/2006 +0 days 🔍
08/11/2006 +1 days 🔍
08/15/2006 +4 days 🔍
08/15/2006 +0 days 🔍
08/17/2006 +2 days 🔍
08/23/2006 +6 days 🔍
08/30/2006 +7 days 🔍
03/12/2015 +3116 days 🔍
06/21/2025 +3754 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 192779
Organization: Red Hat
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-2446 (🔍)
GCVE (CVE): GCVE-0-2006-2446
GCVE (VulDB): GCVE-100-31802

OVAL: 🔍

SecurityFocus: 19475 - Linux Kernel Unspecified Socket Buffer Handling Remote Denial of Service Vulnerability
Secunia: 21465 - Red Hat update for kernel, Moderately Critical
OSVDB: 28551 - CVE-2006-2446 - Linux - Denial of Service Issue
Vulnerability Center: 12534 - Linux Kernel 2.6.9 Remote Denial of Service due to Race Condition, High

See also: 🔍

Entryinfo

Created: 03/12/2015 15:51
Updated: 06/21/2025 22:17
Changes: 03/12/2015 15:51 (77), 06/24/2019 11:39 (9), 06/21/2025 22:17 (20)
Complete: 🔍
Cache ID: 216:E11:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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