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Fencer Vulns
medium 4.6

CVE-2005-2709 json

The sysctl functionality (sysctl.c) in Linux kernel before 2.6.14.1 allows local users to cause a denial of service (kernel oops) and possi…

published 2005-11-20 20 y ago modified 2026-06-16 4 mo ago also EUVD-2005-2710

cvss
4.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
1
Exploit-DB

Summary

The sysctl functionality (sysctl.c) in Linux kernel before 2.6.14.1 allows local users to cause a denial of service (kernel oops) and possibly execute code by opening an interface file in /proc/sys/net/ipv4/conf/, waiting until the interface is unregistered, then obtaining and modifying function pointers in memory that was used for the ctl_table.

Patch / fix

  • kernel RHEL 3 2.4.21-37.0.1.EL
  • kernel-smp RHEL 3 2.4.21-37.0.1.EL
  • kernel-BOOT RHEL 3 2.4.21-37.0.1.EL
  • kernel-source RHEL 3 2.4.21-37.0.1.EL
  • kernel-hugemem RHEL 3 2.4.21-37.0.1.EL
  • kernel-unsupported RHEL 3 2.4.21-37.0.1.EL
  • kernel-smp-unsupported RHEL 3 2.4.21-37.0.1.EL
  • kernel-hugemem-unsupported RHEL 3 2.4.21-37.0.1.EL

red hat advisories RHSA-2006:0140RHSA-2006:0101

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-2005-2709 updated

security flaw

  • Red Hat Desktop version 3 kernel 2.4.21-37.0.1.EL, kernel-smp 2.4.21-37.0.1.EL, kernel-BOOT 2.4.21-37.0.1.EL, kernel-source 2.4.21-37.0.1.EL, kernel-hugemem 2.4.21-37.0.1.EL, kernel-unsupported 2.4.21-37.0.1.EL, +2 more Red Hat Enterprise Linux AS version 3 kernel 2.4.21-37.0.1.EL, kernel-smp 2.4.21-37.0.1.EL, kernel-BOOT 2.4.21-37.0.1.EL, kernel-source 2.4.21-37.0.1.EL, kernel-hugemem 2.4.21-37.0.1.EL, kernel-unsupported 2.4.21-37.0.1.EL, +2 more
    fixed: vendor fix RHSA-2006:0140
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-22.0.2.EL, kernel-smp 2.6.9-22.0.2.EL, kernel-hugemem 2.6.9-22.0.2.EL Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-22.0.2.EL, kernel-smp 2.6.9-22.0.2.EL, kernel-hugemem 2.6.9-22.0.2.EL
    fixed: vendor fix RHSA-2006:0101
  • Red Hat Enterprise Linux ES version 2.1
    fixed: vendor fix RHSA-2006:0191
  • Red Hat Enterprise Linux ES version 3 kernel 2.4.21-37.0.1.EL, kernel-smp 2.4.21-37.0.1.EL, kernel-BOOT 2.4.21-37.0.1.EL, kernel-source 2.4.21-37.0.1.EL, kernel-hugemem 2.4.21-37.0.1.EL, kernel-unsupported 2.4.21-37.0.1.EL, +2 more
    fixed: vendor fix RHSA-2006:0140
  • Red Hat Enterprise Linux ES version 4 kernel 2.6.9-22.0.2.EL, kernel-smp 2.6.9-22.0.2.EL, kernel-hugemem 2.6.9-22.0.2.EL
    fixed: vendor fix RHSA-2006:0101
  • Red Hat Enterprise Linux WS version 2.1
    fixed: vendor fix RHSA-2006:0191
  • Red Hat Enterprise Linux WS version 3 kernel 2.4.21-37.0.1.EL, kernel-smp 2.4.21-37.0.1.EL, kernel-BOOT 2.4.21-37.0.1.EL, kernel-source 2.4.21-37.0.1.EL, kernel-hugemem 2.4.21-37.0.1.EL, kernel-unsupported 2.4.21-37.0.1.EL, +2 more
    fixed: vendor fix RHSA-2006:0140
  • Red Hat Enterprise Linux WS version 4 kernel 2.6.9-22.0.2.EL, kernel-smp 2.6.9-22.0.2.EL, kernel-hugemem 2.6.9-22.0.2.EL
    fixed: vendor fix RHSA-2006:0101
show 1 more
  • Red Hat Linux Advanced Workstation 2.1
    fixed: vendor fix RHSA-2006:0190

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. First public exploit (EDB-26489)
  2. Published

Exploit prediction

0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-26489 Linux Kernel 2.6.x - Sysctl Unregistration Local Denial of Service dos, 2005-11-09

CVSS scores

assigned by version score vector
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-399 Resource Management Errors
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.