CVE-2005-0449 Denial of service in n/a

What is CVE-2005-0449?

CVE-2005-0449 is a high-severity denial of service vulnerability in Linux kernel, published on 16 Feb 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The netfilter/iptables module in Linux before 2.6.8.1 allows remote attackers to cause a denial of service (kernel crash) or bypass firewall rules via crafted packets, which are not properly handled by the skb_checksum_help function.

Weakness: CWE-20

Which versions are affected by CVE-2005-0449?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2005-0449?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2005-0449 being exploited?

There is no known exploitation of CVE-2005-0449 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-g9wm-8j5w-m9xc.