CVE-2003-0244 Denial of service in n/a

What is CVE-2003-0244?

CVE-2003-0244 is a medium-severity denial of service vulnerability in Linux kernel, published on 8 May 2003. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The route cache implementation in Linux 2.4, and the Netfilter IP conntrack module, allows remote attackers to cause a denial of service (CPU consumption) via packets with forged source addresses that cause a large number of hash table collisions.

Which versions are affected by CVE-2003-0244?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2003-0244?

Apply the vendor's patch.

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-2003-0244 being exploited?

There is no known exploitation of CVE-2003-0244 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-vrhw-hjvj-3gr3.