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Security update for kernel-iseries


(Last modified: 22AUG2003)

solutions Security update for kernel-iseries SuSE Linux Maintenance Web (c984e74c9e565e9fb7eee625eaae0ce5)

Applies to

Product(s): SuSE Linux Enterprise Server 8 for IBM iSeries and IBM pSeries

Package: kernel-iseries
Release: 20030822
Obsoletes: none


This update should be installed on all systems for security reasons.

Problem description

This kernel fixes several security vulnerabilities.
  • CAN-2003-0244: 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 related to the PREROUTING chain
  • Fixed several potential buffer overflows in the 32 bit emulation layer.
  • CAN-2003-0247: Fixed local DOS via /dev/console & TIOCCONS.
  • Fix potential buffer overflow in module load in iCom modem driver.
  • Fix ptrace kmod patch to restore old behaviour.
  • CAN-2003-0476 "fd sharing" problem fixed, where an attacker can read setuid, but not readable programs.
  • CAN-2003-0501 proc disclosure issue was fixed.
  • CAN-2003-0462 /proc/self/* permissions vs executing a setuid application race was fixed.
  • CAN-2003-0464 nfs binding issue, were unprivileged programs could bind to the NFS port, was fixed.
New vulnerabilities fixed since last update:
  • CAN-2003-0619: Integer signedness error in the decode_fh function of nfs3xdr.c in Linux kernel before 2.4.21 allows remote attackers to cause a denial of service (kernel panic) via a negative size value within XDR data of an NFSv3 procedure call.
Additional following critical bugs were fixed:
  • RAID 1 module is no longer miscompiled.
  • avoid race window in submit_bh.
  • added ethtool eeprom config ioctls.
  • better handling for scsi recovered errors added.
  • kmalloc sizeof struct instead of sizeof pointer
  • NFS: Fixed race between mount and lockd.
  • Use different uname -r, to avoid module load problems.
  • The ibmsis driver was updated to version 1.18.16, fixing a problem with a 2757 SCSI storage driver.
Following new critical bugs were fixed:
  • fixed a possible lockup in the iseries viocons driver (also requires an OS/400 PTF).
  • The userland buffer can overflow if /proc/ioport has too long lines.
  • Fixed execv() problems introduced by earlier "fd sharing" fix.
  • handle POSIX locks correctly for terminated processes.
  • longer timeouts for probing DVD-ROMs on a IDE-SCSI converter.
  • fixes for PCI/TCE handling, which led to hardware not being detected.
  • fixed potential file corruption error.


Please install the updates provided at the location noted below.

Installation notes

This update is provided as an RPM package that can easily be installed onto a running system by using this command:
rpm -Uvh kernel-iseries64.rpm
Please run 'mk_initrd' and 'lilo' after the update and reboot the

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.


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