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Fencer Vulns
high 7.8

CVE-2006-2444 in the critical feed json

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…

published 2006-05-25 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-2445

cvss
7.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
22.1%
EPSS 22.1% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

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.

Patch / fix

  • kernel RHEL 4 2.6.9-42.0.2.EL
  • kernel-smp RHEL 4 2.6.9-42.0.2.EL
  • kernel-hugemem RHEL 4 2.6.9-42.0.2.EL
  • kernel-largesmp RHEL 4 2.6.9-42.0.2.EL
  • kernel RHEL 3 2.4.21-47.EL
  • kernel-smp RHEL 3 2.4.21-47.EL
  • kernel-BOOT RHEL 3 2.4.21-47.EL
  • kernel-source RHEL 3 2.4.21-47.EL

red hat advisories RHSA-2006:0617RHSA-2006:0437

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2006-2444 updated

security flaw

  • Red Hat Desktop version 3 kernel 2.4.21-47.EL, kernel-smp 2.4.21-47.EL, kernel-BOOT 2.4.21-47.EL, kernel-source 2.4.21-47.EL, kernel-hugemem 2.4.21-47.EL, kernel-unsupported 2.4.21-47.EL, +2 more Red Hat Enterprise Linux AS version 3 kernel 2.4.21-47.EL, kernel-smp 2.4.21-47.EL, kernel-BOOT 2.4.21-47.EL, kernel-source 2.4.21-47.EL, kernel-hugemem 2.4.21-47.EL, kernel-unsupported 2.4.21-47.EL, +2 more
    fixed: vendor fix RHSA-2006:0437
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-42.0.2.EL, kernel-smp 2.6.9-42.0.2.EL, kernel-hugemem 2.6.9-42.0.2.EL, kernel-largesmp 2.6.9-42.0.2.EL Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-42.0.2.EL, kernel-smp 2.6.9-42.0.2.EL, kernel-hugemem 2.6.9-42.0.2.EL, kernel-largesmp 2.6.9-42.0.2.EL
    fixed: vendor fix RHSA-2006:0617
  • Red Hat Enterprise Linux ES version 3 kernel 2.4.21-47.EL, kernel-smp 2.4.21-47.EL, kernel-BOOT 2.4.21-47.EL, kernel-source 2.4.21-47.EL, kernel-hugemem 2.4.21-47.EL, kernel-unsupported 2.4.21-47.EL, +2 more
    fixed: vendor fix RHSA-2006:0437
  • Red Hat Enterprise Linux ES version 4 kernel 2.6.9-42.0.2.EL, kernel-smp 2.6.9-42.0.2.EL, kernel-hugemem 2.6.9-42.0.2.EL, kernel-largesmp 2.6.9-42.0.2.EL
    fixed: vendor fix RHSA-2006:0617
  • Red Hat Enterprise Linux WS version 3 kernel 2.4.21-47.EL, kernel-smp 2.4.21-47.EL, kernel-BOOT 2.4.21-47.EL, kernel-source 2.4.21-47.EL, kernel-hugemem 2.4.21-47.EL, kernel-unsupported 2.4.21-47.EL, +2 more
    fixed: vendor fix RHSA-2006:0437
  • Red Hat Enterprise Linux WS version 4 kernel 2.6.9-42.0.2.EL, kernel-smp 2.6.9-42.0.2.EL, kernel-hugemem 2.6.9-42.0.2.EL, kernel-largesmp 2.6.9-42.0.2.EL
    fixed: vendor fix RHSA-2006:0617
  • Red Hat Linux Advanced Workstation 2.1
    fixed: vendor fix RHSA-2006:0580

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Published
  2. First public exploit (EDB-1880)

Exploit prediction

22.11% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-1880 Linux Kernel < 2.6.16.18 - Netfilter NAT SNMP Module Remote Denial of Service dos, 2006-06-05

CVSS scores

assigned by version score vector
NVD 2.0 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.