CVE-2003-0244

mediumpriority · track · 23EPSS 0.077 · 95 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
7.73% (95th) EPSS
CVSS 5 · medium
Is it mine?
5 products
Check your exposure
Who says so?
3 sources
enisa_euvd · nvd · redhat_csaf

EPSS · scored 2026-10-27

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.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • FixedRed Hat Enterprise Linux AS (Advanced Server) version 2.1 redhat_csaf

    Release notes, driver notes, and driver disks for this update are available at the following URL: http://www.redhat.com/support/errata/rhel/ Before applying this update, make sure all previously released errata relevant to your system have been applied, especially the additional packages from RHSA-2002:205 and RHSA-2002:206 respectively. The procedure for upgrading the kernel manually is documented at: http://www.redhat.com/support/docs/howto/kernel-upgrade/ Please read the directions for your architecture carefully before proceeding with the kernel upgrade. Please note that this update is also available via Red Hat Network. Many people find this to be an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system. Note that you need to select the kernel explicitly on default configurations of up2date.

    https://access.redhat.com/errata/RHSA-2003:145
  • FixedRed Hat Linux Advanced Workstation 2.1redhat_csaf

    Release notes, driver notes, and driver disks for this update are available at the following URL: http://www.redhat.com/support/errata/rhel/ Before applying this update, make sure all previously released errata relevant to your system have been applied, especially the additional packages from RHSA-2002:205 and RHSA-2002:206 respectively. The procedure for upgrading the kernel manually is documented at: http://www.redhat.com/support/docs/howto/kernel-upgrade/ Please read the directions for your architecture carefully before proceeding with the kernel upgrade. Please note that this update is also available via Red Hat Network. Many people find this to be an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system. Note that you need to select the kernel explicitly on default configurations of up2date.

    https://access.redhat.com/errata/RHSA-2003:145
  • FixedRed Hat Linux 7.1redhat_csaf

    NOTE: Installing the kernel rpms does not automatically prepare the system to boot the new kernel. Refer to the Problem Description section for specific instructions. Before applying this update, make sure all previously released errata relevant to your system have been applied. Please note that this update is also available via Red Hat Network. Many people find this to be an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system. Note that you need to select the kernel explicitly on default configurations of up2date.

    https://access.redhat.com/errata/RHSA-2003:190
02

cvss

Technical severity, 0–10. One row per scoring source.

5.0
010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9
v2.04.3mediumAV:N/AC:L/Au:N/C:N/I:N/A:P/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-399USLLM-inferredCWE-400USLLM-inferred
04

affected products (5)

Products and version ranges known to be affected.

05

advisories (2)

Vendor and ecosystem advisories describing this.

  • RHSA-2003:145Red Hat Security Advisory: Updated kernel fixes security vulnerabilities and updates drivers2003-05-27csaf · redhat_csafUS

    These updated kernel packages address security vulnerabilites, including a potential data corruption scenario. In addition, a number of drivers have been updated, bugs have been resolved, and support for the IBM x450 platform and the Madison processor have been added.

  • RHSA-2003:190Red Hat Security Advisory: : : : Updated 2.4 kernel for pSeries and iSeries fixes vulnerabilities2003-06-25csaf · redhat_csafUS

    Updated kernel packages, based on the 2.4.18 kernel, are now available for Red Hat Linux 7.1 for iSeries and pSeries systems. Please see the NOTE at the end of the description for important information about booting the new kernel on your system.

06

also known as (2)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

published 2003-05-27modified 2026-06-16
08

references (38)

External citations — patches, advisories, analysis.

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