Security update for Linux kernel (kernel-source)

Knowledgebase

(Last modified: 08JUL2002)

solutions Security update for Linux kernel (kernel-source) SuSE Linux Maintenance Web (c84adeb4e02b27c1ff625cb117882f9a)

Applies to

Product(s): SuSE Linux Enterprise Server 7 for S/390 and zSeries

Package: kernel-source
Release: 20020708
Obsoletes: none

Indications

This update should be installed for building custom kernels or third party modules.

Contraindications

VM not updated to latest APARs.

Problem description

This Kernel source contains fixes for the following problems:

fix for ip_conntrack security problem
fix for TCP RST handling in listen: Linux would previously accept SYN packets with a RST or FIN bit set. This could be used to circumvent some packet filters who assume that these packets cannot open a new connection
fix for possibly incorrect TLB flushing under extreme circumstances
fix for SMP race in msgrcv(can trigger only with extensive IPC usage)
fix for SMP race in locking code of the NFS client
fix for CTC not restarting after I/O errors
fix for initialisation problems in the dasd discipline drivers
update to IBM Code Drop 2002-11-25 which fixes these problems:
- Linux hangs after a device is gone
- Linux hangs after a tape attach or attached tape is not recognized
- Linux fails to detect devices after 'not operational' messages
- fix for initialisation problems when bringing up IUCV connections

Solution

Please install the updates provided at the location noted below
For detailed information about the required APARs / PTFs, please refer to the "OSA-Express QDIO performance enhanced in consolidated Linux under z/VM environments" document at http://www.vm.ibm.com/perf/tips/vm-linux.pdf

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-source.rpm

links to download packages

SUSE Linux Enterprise Server 7 for S/390 and zSeries (s390)

Download Source Packages

Download the source code of the patches for maintained products.

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