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SUSE Security Announcement
Package: kernel Announcement-ID: SUSE-SA:2005:010 Date: Fri, 25 Feb 2005 13:00:00 +0000 Affected products: SUSE Linux 9.1 SUSE Linux Enterprise Server 9 Novell Linux Desktop 9 Vulnerability Type: bugfix update Severity (1-10): 1 SUSE default package: yes Cross References: None.
Content of this advisory: 1) security vulnerability resolved: NVidia bugfix update 2) solution/workaround 3) special instructions and notes 4) package location and checksums 5) pending vulnerabilities, solutions, workarounds: See SUSE Summary Report. 6) standard appendix (further information)
1) problem description, brief discussion
The previous kernel security update for the SUSE Linux 9.1 and the SUSE Linux Enterprise Server 9 based products caused problems with the NVidia driver for users with NVidia graphics cards.
Stricter checking in the memory management functions in the kernel caused the kernel to hang as soon as the X Window System was started. This bug happens to all users who installed the NVidia driver via YOU and therefore still used the 1.0-5336 version of the NVidia driver.
This updates fixes this problem,
Users who don't use the NVidia driver or use a later version of the driver are not affected and do not need to update.
To install the update on an affected/broken system, boot the SUSE Linux 9.1 system into run level 3 (by supplying "3" as command line argument on the boot prompt), then log in as root and run the text mode version of the YaST Online Update.
Follow the instructions in the curses interface and install this kernel update.
No other fixes are included in this update.
3) special instructions and notes
SPECIAL INSTALL INSTRUCTIONS: ============================== The following paragraphs will guide you through the installation process in a step-by-step fashion. The character sequence "****" marks the beginning of a new paragraph. In some cases, the steps outlined in a particular paragraph may or may not be applicable to your situation. Therefore, please make sure to read through all of the steps below before attempting any of these procedures. All of the commands that need to be executed are required to be run as the superuser (root). Each step relies on the steps before it to complete successfully.
**** Step 1: Determine the needed kernel type
Please use the following command to find the kernel type that is installed on your system:
rpm -qf /boot/vmlinuz
Following are the possible kernel types (disregard the version and build number following the name separated by the "-" character)
kernel-bigsmp kernel-default kernel-smp
**** Step 2: Download the package for your system
Please download the kernel RPM package for your distribution with the name as indicated by Step 1. The list of all kernel rpm packages is appended below. Note: The kernel-source package does not contain a binary kernel in bootable form. Instead, it contains the sources that the binary kernel rpm packages are created from. It can be used by administrators who have decided to build their own kernel. Since the kernel-source.rpm is an installable (compiled) package that contains sources for the linux kernel, it is not the source RPM for the kernel RPM binary packages.
The kernel RPM binary packages for the distributions can be found at the locations below ftp://ftp.suse.com/pub/suse/i386/update/.
After downloading the kernel RPM package for your system, you should verify the authenticity of the kernel rpm package using the methods as listed in section 3) of each SUSE Security Announcement.
**** Step 3: Installing your kernel rpm package
Install the rpm package that you have downloaded in Steps 3 or 4 with the command rpm -Uhv --nodeps --force <K_FILE.RPM> where <K_FILE.RPM> is the name of the rpm package that you downloaded.
Warning: After performing this step, your system will likely not be able to boot if the following steps have not been fully followed.
**** Step 4: configuring and creating the initrd
The initrd is a ramdisk that is loaded into the memory of your system together with the kernel boot image by the bootloader. The kernel uses the content of this ramdisk to execute commands that must be run before the kernel can mount its actual root filesystem. It is usually used to initialize SCSI drivers or NIC drivers for diskless operation.
The variable INITRD_MODULES in /etc/sysconfig/kernel determines which kernel modules will be loaded in the initrd before the kernel has mounted its actual root filesystem. The variable should contain your SCSI adapter (if any) or filesystem driver modules.
With the installation of the new kernel, the initrd has to be re-packed with the update kernel modules. Please run the command
as root to create a new init ramdisk (initrd) for your system. On SuSE Linux 8.1 and later, this is done automatically when the RPM is installed.
**** Step 5: bootloader
If you run a SUSE LINUX 8.x, SLES8, or SUSE LINUX 9.x system, there are two options: Depending on your software configuration, you have either the lilo bootloader or the grub bootloader installed and initialized on your system. The grub bootloader does not require any further actions to be performed after the new kernel images have been moved in place by the rpm Update command. If you have a lilo bootloader installed and initialized, then the lilo program must be run as root. Use the command
grep LOADER_TYPE /etc/sysconfig/bootloader
to find out which boot loader is configured. If it is lilo, then you must run the lilo command as root. If grub is listed, then your system does not require any bootloader initialization.
Warning: An improperly installed bootloader may render your system unbootable.
**** Step 6: reboot
If all of the steps above have been successfully completed on your system, then the new kernel including the kernel modules and the initrd should be ready to boot. The system needs to be rebooted for the changes to become active. Please make sure that all steps have completed, then reboot using the command shutdown -r now or init 6
Your system should now shut down and reboot with the new kernel. 4) package location and checksums
Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web.
SUSE Linux 9.1: ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-bigsmp-2.6.5-7.147.i586.rpm ca61c9794be41cb7f01263bf3d5f83ce ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-default-2.6.5-7.147.i586.rpm 6fcd39c81f84138a764115418f5d0588 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-smp-2.6.5-7.147.i586.rpm 8213913ce36c04f18621b9ce253102cc ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-source-2.6.5-7.147.i586.rpm 76f94e76181641a0202dfc3ad7d19ab6 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-syms-2.6.5-7.147.i586.rpm 21612e8d8347124b963ed8111cc1d34f ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/ltmodem-2.6.2-38.13.i586.rpm 5314dc0fb03831584a989217e020a6d8 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/noarch/kernel-docs-2.6.5-7.147.noarch.rpm 03a8cde2a5985d8d729e9aabbc5af465 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-docs-2.6.5-7.147.src.rpm 2b0c294292fbeb8a2d761b9bbe230842
SUSE Linux 9.1: ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/noarch/kernel-docs-2.6.5-7.147.noarch.rpm c77e040b0c22eb7e7af5fe02c2deaa11 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-default-2.6.5-7.147.x86_64.rpm efcd5484ac03587d3d8f10c46bad931c ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-smp-2.6.5-7.147.x86_64.rpm 7c1b4e211d2305f35f7679632e37ea3a ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-source-2.6.5-7.147.x86_64.rpm 1671cd2634964566c7414bd8004371f5 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-syms-2.6.5-7.147.x86_64.rpm 99a5e74ef70a6230f2a37985ff1314f3 source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-default-2.6.5-7.147.nosrc.rpm f6a40e8be9b2af72aaf89141189ca29b ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-docs-2.6.5-7.147.src.rpm 4abcb6766c95eb202a29db1a2f7d5e4a ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-smp-2.6.5-7.147.nosrc.rpm 48a802085acc6263346fafd859bc606c ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-source-2.6.5-7.147.src.rpm e844e9b32d84e951ac357156990223c6 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-syms-2.6.5-7.147.src.rpm 3bba9e6ba449fa0f910880634e86315d
5) Pending vulnerabilities in SUSE Distributions and Workarounds:
See SUSE Security Summary Report.
6) standard appendix: authenticity verification, additional information
- Package authenticity verification:
SUSE update packages are available on many mirror ftp servers all over the world. While this service is being considered valuable and important to the free and open source software community, many users wish to be sure about the origin of the package and its content before installing the package. There are two verification methods that can be used independently from each other to prove the authenticity of a downloaded file or rpm package: 1) md5sums as provided in the (cryptographically signed) announcement. 2) using the internal gpg signatures of the rpm package.
1) execute the command md5sum <name-of-the-file.rpm> after you downloaded the file from a SUSE ftp server or its mirrors. Then, compare the resulting md5sum with the one that is listed in the announcement. Since the announcement containing the checksums is cryptographically signed (usually using the key firstname.lastname@example.org), the checksums show proof of the authenticity of the package. We disrecommend to subscribe to security lists which cause the email message containing the announcement to be modified so that the signature does not match after transport through the mailing list software. Downsides: You must be able to verify the authenticity of the announcement in the first place. If RPM packages are being rebuilt and a new version of a package is published on the ftp server, all md5 sums for the files are useless.
2) rpm package signatures provide an easy way to verify the authenticity of an rpm package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, where <file.rpm> is the filename of the rpm package that you have downloaded. Of course, package authenticity verification can only target an un-installed rpm package file. Prerequisites: a) gpg is installed b) The package is signed using a certain key. The public part of this key must be installed by the gpg program in the directory ~/.gnupg/ under the user's home directory who performs the signature verification (usually root). You can import the key that is used by SUSE in rpm packages for SUSE Linux by saving this announcement to a file ("announcement.txt") and running the command (do "su -" to be root): gpg --batch; gpg < announcement.txt | gpg --import SUSE Linux distributions version 7.1 and thereafter install the key "email@example.com" upon installation or upgrade, provided that the package gpg is installed. The file containing the public key is placed at the top-level directory of the first CD (pubring.gpg) and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de .
- SUSE runs two security mailing lists to which any interested party may subscribe:
firstname.lastname@example.org - general/linux/SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an email to email@example.com.
firstname.lastname@example.org - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an email to email@example.com.
===================================================================== SUSE's security contact is firstname.lastname@example.org or email@example.com. @suse.de>. The firstname.lastname@example.org public key is listed below. ===================================================================== ______________________________________________________________________________
The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, it is desired that the clear-text signature shows proof of the authenticity of the text. SUSE Linux AG makes no warranties of any kind whatsoever with respect to the information contained in this security advisory.
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