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Security update for Linux kernel

Knowledgebase

(Last modified: 16MAY2006)


solutions Security update for Linux kernel SuSE Linux Maintenance Web (7efe4a0df957d96db9ff8eec18a9e912)

Applies to

Package: k_deflt
k_numa
k_smp
kernel-source
Product(s): SuSE Linux Enterprise Server 8 for AMD64
Patch: patch-10993
Release: 20060516
Obsoletes: 91e977c7e67c3b27c1652d59fa4ff24e

Indications

Everyone using the Linux Kernel on x86_64 architecture should update.

Contraindications

None.

Problem description

This kernel update fixes several security problems:
  • CVE-2006-1524: shmat: stop mprotect from giving write permission to a readonly shared memory attachment.
  • CVE-2006-1864: Due to incorrect argument checking it was possible to break out of chroots on smbfs filesystems.
  • CVE-2006-1342: A minor information leak in SO_ORIGINAL_DST was fixed.
  • CVE-2005-4798: Creation of long symlinks on the NFS server could crash the client machine.
  • CVE-2006-1056: i386/x86-64: Fix AMD x87 information leak between processes.
  • CVE-2006-0741: x86_64 only: Always check that RIPs are canonical during signal handling, otherwise local attackers could crash the machine.
  • CVE-2006-0742: IA64 only: Don't declare die_if_kernel as noreturn, otherwise local attackers can crash the machine.
Additional following bugs were fixed:
  • reiserfs: don't BUG() in panic
  • nfs client: handle long symlinks properly
  • PowerPC64: sys_rt_sig return should return a long instead of int.
  • SCSI-Tape driver: Zero-initialize scatter-gather list to avoid BUGs.
  • IA64: don't declare die_if_kernel as noreturn

Solution

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.
First, find out which kernel package to use, for example with
rpm -qf /boot/vmlinuz
Download the kernel image fitting your setup and install it with either:
  • rpm -Fvh k_deflt-2.4.*.rpm for the default kernel image, or
  • rpm -Fhv k_smp-2.4.*.rpm for the SMP kernel image, or
  • rpm -Fhv k_numa-2.4.*.rpm for the NUMA kernel image
Please do only install one of these kernels, not all of them.
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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