CVE-2005-2709

CVE-2005-2709 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.6)
• EPSS exploit prediction: 1% (58th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-399
• Affected product: Linux Linux Kernel
• Published: 2005-11-20
• Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2005-2709?

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.

How severe is CVE-2005-2709?

CVE-2005-2709 has a CVSS 2.0 base score of 4.6, rated medium severity.

Is CVE-2005-2709 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-2709?

CVE-2005-2709 primarily affects Linux Linux Kernel. In total, 134 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-2709?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2005-2709 published?

CVE-2005-2709 was published on 2005-11-20 and last updated on 2026-06-16.

References

• http://secunia.com/advisories/17504
• http://secunia.com/advisories/17541
• http://secunia.com/advisories/17648
• http://secunia.com/advisories/18510
• http://secunia.com/advisories/18562
• http://secunia.com/advisories/18684
• http://secunia.com/advisories/19369
• http://secunia.com/advisories/19374
• http://securitytracker.com/id?1015434
• http://www.debian.org/security/2006/dsa-1017
• http://www.debian.org/security/2006/dsa-1018
• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.14.1
• http://www.mandriva.com/security/advisories?name=MDKSA-2006:059
• http://www.osvdb.org/20676
• http://www.redhat.com/support/errata/RHSA-2006-0101.html
• http://www.redhat.com/support/errata/RHSA-2006-0140.html
• http://www.redhat.com/support/errata/RHSA-2006-0190.html
• http://www.redhat.com/support/errata/RHSA-2006-0191.html
• http://www.securityfocus.com/archive/1/427980/100/0/threaded
• http://www.securityfocus.com/archive/1/427981/100/0/threaded
• http://www.securityfocus.com/archive/1/428028/100/0/threaded
• http://www.securityfocus.com/archive/1/428058/100/0/threaded
• http://www.securityfocus.com/bid/15365
• http://www.vupen.com/english/advisories/2005/2359
• https://exchange.xforce.ibmcloud.com/vulnerabilities/23040
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10746
• https://usn.ubuntu.com/219-1/

Affected products (134)

• cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.2.27:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.9:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.10:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.11:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.12:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.13:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.14:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.15:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.16:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.17:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.18:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.18:*:pre-1:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.18:*:pre-2:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.18:*:pre-3:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.18:*:pre-4:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.18:*:pre-5:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.18:*:pre-6:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.18:*:pre-7:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.18:*:pre-8:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.18:*:x86:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.19:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.19:*:-pre1:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.19:*:-pre2:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.19:*:-pre3:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.19:*:-pre4:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.19:*:-pre5:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.19:*:-pre6:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.20:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.21:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.21:*:-pre1:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.4.21:*:-pre4:*:*:*:*:*

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