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Mandrake Linux Advisory: kernel

Jun 12, 2003, 00:58 (1 Talkback[s])

Mandrake Linux Security Update Advisory

Package name: kernel
Advisory ID: MDKSA-2003:066
Date: June 11th, 2003
Affected versions: 9.1

Problem Description:

Multiple vulnerabilities were discovered and fixed in the Linux kernel.

  • CAN-2003-0001: Multiple ethernet network card drivers do not pad frames with null bytes which allows remote attackers to obtain information from previous packets or kernel memory by using special malformed packets.
  • CAN-2003-0244: The route cache implementation in the 2.4 kernel and the Netfilter IP conntrack module allows remote attackers to cause a Denial of Service (DoS) via CPU consumption due to packets with forged source addresses that cause a large number of hash table collisions related to the PREROUTING chain.
  • CAN-2003-0246: The ioperm implementation in 2.4.20 and earlier kernels does not properly restrict privileges, which allows local users to gain read or write access to certain I/O ports.
  • CAN-2003-0247: A vulnerability in the TTY layer of the 2.4 kernel allows attackers to cause a kernel oops resulting in a DoS.
  • CAN-2003-0248: The mxcsr code in the 2.4 kernel allows attackers to modify CPU state registers via a malformed address.

As well, a number of bug fixes were made in the 9.1 kernel including:

  • Support for more machines that did not work with APIC
  • Audigy2 support
  • New/updated modules: prims25, adiusbadsl, thinkpad, ieee1394, orinoco, via-rhine,
  • Fixed SiS IOAPIC
  • IRQ balancing has been fixed for SMP
  • Updates to ext3
  • The previous ptrace fix has been redone to work better

MandrakeSoft encourages all users to upgrade to these new kernels. Updated kernels will be available shortly for other supported platforms and architectures.



Updated Packages:

Mandrake Linux 9.1:
bca5bada0476e53911f157e9ec5ca504 9.1/RPMS/kernel-
57ee4b2b038598cbd020f1e0752a61dd 9.1/RPMS/kernel-BOOT-
b14c3291fab83bd1894c8b5217311dfa 9.1/RPMS/kernel-doc-2.4.21-0.18mdk.i586.rpm
ed766922171751e1f05c6ce590af9755 9.1/RPMS/kernel-enterprise-
64c554564115626ff86cf3fd5e40ece1 9.1/RPMS/kernel-secure-
944017f71e79714767d94517cd41110d 9.1/RPMS/kernel-smp-
9621bebecb94bc6031ffaa073c4967f1 9.1/RPMS/kernel-source-2.4.21-0.18mdk.i586.rpm
9d0c651808a2874256489f3a90ad6fdb 9.1/SRPMS/kernel-

Bug IDs fixed (see https://qa.mandrakesoft.com for more information):

To upgrade automatically, use MandrakeUpdate. The verification of md5 checksums and GPG signatures is performed automatically for you.

If you want to upgrade manually, download the updated package from one of our FTP server mirrors and upgrade with "rpm -Fvh *.rpm". A list of FTP mirrors can be obtained from:


Please verify the update prior to upgrading to ensure the integrity of the downloaded package. You can do this with the command:

rpm --checksig <filename>

All packages are signed by MandrakeSoft for security. You can obtain the GPG public key of the Mandrake Linux Security Team from:


Please be aware that sometimes it takes the mirrors a few hours to update.

You can view other update advisories for Mandrake Linux at:


MandrakeSoft has several security-related mailing list services that anyone can subscribe to. Information on these lists can be obtained by visiting:


If you want to report vulnerabilities, please contact


Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Linux Mandrake Security Team
<security linux-mandrake.com>