CVE-2003-0244
mediumpriority · track · 23EPSS 0.077 · 95 %ileEUUSEPSS · 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.
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
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (5)
Products and version ranges known to be affected.
- Red Hat Enterprise Linux AS (Advanced Server) version 2.1 all versionsfixedredhat_csafUScpe:/o:redhat:enterprise_linux:2.1::as
- Red Hat Linux Advanced Workstation 2.1all versionsfixedredhat_csafUScpe:/o:redhat:enterprise_linux:2.1::aw
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.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (38)
External citations — patches, advisories, analysis.
- http://archives.neohapsis.com/archives/vulnwatch/2003-q2/0073.htmlenisa_euvd
- http://marc.info/?l=bugtraq&m=105301461726555&w=2enisa_euvd
- http://marc.info/?l=bugtraq&m=105595901923063&w=2enisa_euvd
- http://marc.info/?l=linux-kernel&m=104956079213417enisa_euvd
- http://www.debian.org/security/2003/dsa-311enisa_euvd
- http://www.debian.org/security/2003/dsa-312enisa_euvd
- http://www.debian.org/security/2003/dsa-332enisa_euvd
- http://www.debian.org/security/2003/dsa-336enisa_euvd
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