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Security update for Linux kernel (k_timer)


(Last modified: 24SEP2003)

solutions Security update for Linux kernel (k_timer) SuSE Linux Maintenance Web (81fdf09573cf5fe4ff1947019a3eaef4)

Applies to

Product(s): SuSE Linux Enterprise Server 7 for IBM zSeries

Package: k_timer
Release: 20030924
Obsoletes: none


This update should be installed on all systems.
This article applies to systems with the k_timer kernel package installed, please use the appropriate kernel package if you are using a different kernel:
You can find out which kernel package you are using with
rpm -qf /boot/kernel/image


Using z/VM 4.3 and PTF UM30652 not installed.


This update fixes various problems and contains the following enhancements:
IBM code drop from 2003-09-04
  • ccwcache: Incorrect cache index determination.
  • siginfo_t structure on user stack incorrect.
  • dasd: erroneous message about failing DASD format.
  • dasd_diag: buggy CMS label recognition in fs/partitions/ibm.c.
  • Crash when using CTC tty with gcov.
  • Oops in IUCV code.
  • On demand timer patch: missing local irq disable
Further improvements
  • Reduce the value of QUEUE_NR_REQUESTS from 8192 to 128
  • Set the device type of /proc/tty/driver/tty3270 to char
Security fixes
  • Add a missing check for madvise(MADV_WILLNEED)
  • fix overflow problem in NFSv3 decode_fh
  • prevent possible DoS in netfilter code
  • fix several race conditions in procfs
IBM code drops
This update includes the following IBM code drops:
  • 2003-09-04 kernel 2.4.17 for the "August 2001 stream" (Patch 10)

Installation notes

This update is provided as an RPM package that can easily be installed onto a running system by using these commands:
rpm -Fvh k_timer.rpm zipl
please do not forget to run zipl after installing the k_timer for the system to remain bootable.
Finally, reboot the system with
shutdown -r now
to load the new kernel (replace "now" with the appropriate amount of time to allow local users to cleanly log out, for example "+5" for five minutes.)

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.


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