Vulnerability Monitor

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CVE-2006-2444

The snmp_trap_decode function in the SNMP NAT helper for Linux kernel before 2.6.16.18 allows remote attackers to cause a denial of service (crash) via unspecified remote attack vectors that cause failures in snmp_trap_decode that trigger (1) frees of random memory or (2) frees of previously-freed memory (double-free) by snmp_trap_decode as well as its calling function, as demonstrated via certain test cases of the PROTOS SNMP test suite.

Security Impact Summary

CVE-2006-2444 is a security vulnerability that . Impacting 1 product from linux organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2006, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2006-05-25T10:02:00.000

Last Modified

2026-04-16T00:27:16.627

Status

Modified

Source

[email protected]

Severity

CVSSv2: 7.8 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

6.9

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.1	Yes
Operating System	linux	linux_kernel	2.6.1	Yes
Operating System	linux	linux_kernel	2.6.1	Yes
Operating System	linux	linux_kernel	2.6.1	Yes
Operating System	linux	linux_kernel	2.6.2	Yes
Operating System	linux	linux_kernel	2.6.2	Yes
Operating System	linux	linux_kernel	2.6.2	Yes
Operating System	linux	linux_kernel	2.6.2	Yes
Operating System	linux	linux_kernel	2.6.3	Yes
Operating System	linux	linux_kernel	2.6.3	Yes
Operating System	linux	linux_kernel	2.6.3	Yes
Operating System	linux	linux_kernel	2.6.3	Yes
Operating System	linux	linux_kernel	2.6.3	Yes
Operating System	linux	linux_kernel	2.6.4	Yes
Operating System	linux	linux_kernel	2.6.4	Yes
Operating System	linux	linux_kernel	2.6.4	Yes
Operating System	linux	linux_kernel	2.6.4	Yes
Operating System	linux	linux_kernel	2.6.5	Yes
Operating System	linux	linux_kernel	2.6.5	Yes
Operating System	linux	linux_kernel	2.6.5	Yes
Operating System	linux	linux_kernel	2.6.5	Yes
Operating System	linux	linux_kernel	2.6.6	Yes
Operating System	linux	linux_kernel	2.6.6	Yes
Operating System	linux	linux_kernel	2.6.6	Yes
Operating System	linux	linux_kernel	2.6.6	Yes
Operating System	linux	linux_kernel	2.6.7	Yes
Operating System	linux	linux_kernel	2.6.7	Yes
Operating System	linux	linux_kernel	2.6.7	Yes
Operating System	linux	linux_kernel	2.6.7	Yes
Operating System	linux	linux_kernel	2.6.8	Yes
Operating System	linux	linux_kernel	2.6.8	Yes
Operating System	linux	linux_kernel	2.6.8	Yes
Operating System	linux	linux_kernel	2.6.8	Yes
Operating System	linux	linux_kernel	2.6.8	Yes
Operating System	linux	linux_kernel	2.6.8.1	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.9	Yes
Operating System	linux	linux_kernel	2.6.9	Yes
Operating System	linux	linux_kernel	2.6.9	Yes
Operating System	linux	linux_kernel	2.6.9	Yes
Operating System	linux	linux_kernel	2.6.9	Yes
Operating System	linux	linux_kernel	2.6.9	Yes
Operating System	linux	linux_kernel	2.6.10	Yes
Operating System	linux	linux_kernel	2.6.10	Yes
Operating System	linux	linux_kernel	2.6.10	Yes
Operating System	linux	linux_kernel	2.6.10	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11.1	Yes
Operating System	linux	linux_kernel	2.6.11.2	Yes
Operating System	linux	linux_kernel	2.6.11.3	Yes
Operating System	linux	linux_kernel	2.6.11.4	Yes
Operating System	linux	linux_kernel	2.6.11.5	Yes
Operating System	linux	linux_kernel	2.6.11.6	Yes
Operating System	linux	linux_kernel	2.6.11.7	Yes
Operating System	linux	linux_kernel	2.6.11.8	Yes
Operating System	linux	linux_kernel	2.6.11.9	Yes
Operating System	linux	linux_kernel	2.6.11.10	Yes
Operating System	linux	linux_kernel	2.6.11.11	Yes
Operating System	linux	linux_kernel	2.6.11.12	Yes
Operating System	linux	linux_kernel	2.6.11_rc1_bk6	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12.1	Yes
Operating System	linux	linux_kernel	2.6.12.2	Yes
Operating System	linux	linux_kernel	2.6.12.3	Yes
Operating System	linux	linux_kernel	2.6.12.4	Yes
Operating System	linux	linux_kernel	2.6.12.5	Yes
Operating System	linux	linux_kernel	2.6.12.6	Yes
Operating System	linux	linux_kernel	2.6.13	Yes
Operating System	linux	linux_kernel	2.6.13	Yes
Operating System	linux	linux_kernel	2.6.13	Yes
Operating System	linux	linux_kernel	2.6.13	Yes
Operating System	linux	linux_kernel	2.6.13	Yes
Operating System	linux	linux_kernel	2.6.13	Yes
Operating System	linux	linux_kernel	2.6.13	Yes
Operating System	linux	linux_kernel	2.6.13	Yes
Operating System	linux	linux_kernel	2.6.13.1	Yes
Operating System	linux	linux_kernel	2.6.13.2	Yes
Operating System	linux	linux_kernel	2.6.13.3	Yes
Operating System	linux	linux_kernel	2.6.13.4	Yes
Operating System	linux	linux_kernel	2.6.14	Yes
Operating System	linux	linux_kernel	2.6.14	Yes
Operating System	linux	linux_kernel	2.6.14	Yes
Operating System	linux	linux_kernel	2.6.14	Yes
Operating System	linux	linux_kernel	2.6.14	Yes
Operating System	linux	linux_kernel	2.6.14	Yes
Operating System	linux	linux_kernel	2.6.14.1	Yes
Operating System	linux	linux_kernel	2.6.14.2	Yes
Operating System	linux	linux_kernel	2.6.14.3	Yes
Operating System	linux	linux_kernel	2.6.14.4	Yes
Operating System	linux	linux_kernel	2.6.14.5	Yes
Operating System	linux	linux_kernel	2.6.14.6	Yes
Operating System	linux	linux_kernel	2.6.14.7	Yes
Operating System	linux	linux_kernel	2.6.15	Yes
Operating System	linux	linux_kernel	2.6.15	Yes
Operating System	linux	linux_kernel	2.6.15	Yes
Operating System	linux	linux_kernel	2.6.15	Yes
Operating System	linux	linux_kernel	2.6.15	Yes
Operating System	linux	linux_kernel	2.6.15	Yes
Operating System	linux	linux_kernel	2.6.15	Yes
Operating System	linux	linux_kernel	2.6.15.1	Yes
Operating System	linux	linux_kernel	2.6.15.2	Yes
Operating System	linux	linux_kernel	2.6.15.3	Yes
Operating System	linux	linux_kernel	2.6.15.4	Yes
Operating System	linux	linux_kernel	2.6.15.5	Yes
Operating System	linux	linux_kernel	2.6.15.6	Yes
Operating System	linux	linux_kernel	2.6.15.7	Yes
Operating System	linux	linux_kernel	2.6.16	Yes
Operating System	linux	linux_kernel	2.6.16	Yes
Operating System	linux	linux_kernel	2.6.16	Yes
Operating System	linux	linux_kernel	2.6.16	Yes
Operating System	linux	linux_kernel	2.6.16	Yes
Operating System	linux	linux_kernel	2.6.16	Yes
Operating System	linux	linux_kernel	2.6.16	Yes
Operating System	linux	linux_kernel	2.6.16.1	Yes
Operating System	linux	linux_kernel	2.6.16.2	Yes
Operating System	linux	linux_kernel	2.6.16.3	Yes
Operating System	linux	linux_kernel	2.6.16.4	Yes
Operating System	linux	linux_kernel	2.6.16.5	Yes
Operating System	linux	linux_kernel	2.6.16.6	Yes
Operating System	linux	linux_kernel	2.6.16.7	Yes
Operating System	linux	linux_kernel	2.6.16.8	Yes
Operating System	linux	linux_kernel	2.6.16.9	Yes
Operating System	linux	linux_kernel	2.6.16.10	Yes
Operating System	linux	linux_kernel	2.6.16.11	Yes
Operating System	linux	linux_kernel	2.6.16.12	Yes
Operating System	linux	linux_kernel	2.6.16.13	Yes
Operating System	linux	linux_kernel	2.6.16.14	Yes
Operating System	linux	linux_kernel	2.6.16.15	Yes
Operating System	linux	linux_kernel	2.6.16.16	Yes
Operating System	linux	linux_kernel	2.6.16_rc7	Yes
Operating System	linux	linux_kernel	2.6_test9_cvs	Yes

References

http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.18 Patch ([email protected])
http://secunia.com/advisories/20182 ([email protected])
http://secunia.com/advisories/20225 Patch, Vendor Advisory ([email protected])
http://secunia.com/advisories/20716 ([email protected])
http://secunia.com/advisories/21035 ([email protected])
http://secunia.com/advisories/21136 ([email protected])
http://secunia.com/advisories/21179 ([email protected])
http://secunia.com/advisories/21498 ([email protected])
http://secunia.com/advisories/21605 ([email protected])
http://secunia.com/advisories/21983 ([email protected])
http://secunia.com/advisories/22082 ([email protected])
http://secunia.com/advisories/22093 ([email protected])
http://secunia.com/advisories/22174 ([email protected])
http://secunia.com/advisories/22822 ([email protected])
http://securitytracker.com/id?1016153 ([email protected])
http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm ([email protected])
http://support.avaya.com/elmodocs2/security/ASA-2006-203.htm ([email protected])
http://www.debian.org/security/2006/dsa-1183 ([email protected])
http://www.debian.org/security/2006/dsa-1184 ([email protected])
http://www.kb.cert.org/vuls/id/681569 US Government Resource ([email protected])
http://www.kernel.org/git/?p=linux/kernel/git/stable/linux-2.6.16.y.git%3Ba=commit%3Bh=1db6b5a66e93ff125ab871d6b3f7363412cc87e8 ([email protected])
http://www.mandriva.com/security/advisories?name=MDKSA-2006:087 ([email protected])
http://www.novell.com/linux/security/advisories/2006_42_kernel.html ([email protected])
http://www.novell.com/linux/security/advisories/2006_47_kernel.html ([email protected])
http://www.novell.com/linux/security/advisories/2006_64_kernel.html ([email protected])
http://www.osvdb.org/25750 ([email protected])
http://www.redhat.com/support/errata/RHSA-2006-0437.html ([email protected])
http://www.redhat.com/support/errata/RHSA-2006-0580.html ([email protected])
http://www.redhat.com/support/errata/RHSA-2006-0617.html ([email protected])
http://www.securityfocus.com/bid/18081 ([email protected])
http://www.ubuntu.com/usn/usn-302-1 ([email protected])
http://www.vupen.com/english/advisories/2006/1916 ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/26594 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11318 ([email protected])
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.18 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/20182 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/20225 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/20716 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/21035 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/21136 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/21179 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/21498 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/21605 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/21983 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/22082 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/22093 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/22174 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/22822 (af854a3a-2127-422b-91ae-364da2661108)
http://securitytracker.com/id?1016153 (af854a3a-2127-422b-91ae-364da2661108)
http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm (af854a3a-2127-422b-91ae-364da2661108)
http://support.avaya.com/elmodocs2/security/ASA-2006-203.htm (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2006/dsa-1183 (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2006/dsa-1184 (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/681569 US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.kernel.org/git/?p=linux/kernel/git/stable/linux-2.6.16.y.git%3Ba=commit%3Bh=1db6b5a66e93ff125ab871d6b3f7363412cc87e8 (af854a3a-2127-422b-91ae-364da2661108)
http://www.mandriva.com/security/advisories?name=MDKSA-2006:087 (af854a3a-2127-422b-91ae-364da2661108)
http://www.novell.com/linux/security/advisories/2006_42_kernel.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.novell.com/linux/security/advisories/2006_47_kernel.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.novell.com/linux/security/advisories/2006_64_kernel.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.osvdb.org/25750 (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2006-0437.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2006-0580.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2006-0617.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/18081 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/usn-302-1 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2006/1916 (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/26594 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11318 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.