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Security update for Linux kernel

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(Last modified: 08NOV2006)


solutions Security update for Linux kernel
SuSE Linux Maintenance Web (09c539304999e790397997e9b73bc166)

Applies to

Package: k_athlon
k_deflt
k_psmp
k_smp
k_debug
kernel-source
Product(s): SUSE LINUX Retail Solution 8
SuSE Linux School Server for i386
SuSE Linux Standard Server 8
SuSE Linux Enterprise Server 8 for x86
SuSE Linux Openexchange Server 4
Patch: patch-11283
Release: 20061108
Obsoletes: 4839e281693768ffa93750f8bc54dcf1

Indications

Everyone using the Linux Kernel on x86 architecture should update.

Contraindications

None.

Problem description

This kernel update fixes the following security problems:
  • CVE-2006-3468: Remote attackers able to access an NFS of a ext2 or ext3 filesystem can cause a denial of service (file system panic) via a crafted UDP packet with a V2 lookup procedure that specifies a bad file handle (inode number), which triggers an error and causes an exported directory to be remounted read-only. [#192988] [#216265]
  • CVE-2006-2935: A stackbased buffer overflow in CDROM / DVD handling was fixed which could be used by a physical local attacker to crash the kernel or execute code within kernel context, depending on presence of automatic DVD handling in the system. [#190396]
  • CVE-2006-2444: The snmp_trap_decode function in the SNMP NAT helper allows remote attackers to cause a denial of service (crash) via unspecified remote attack vectors that cause failures in snmp_trap_decode that trigger (1) frees of random memory or (2) frees of previously-freed memory (double-free) by snmp_trap_decode as well as its calling function, as demonstrated via certain test cases of the PROTOS SNMP test suite. [#177577]
  • If the IPX network protocol was active, it was possible to remotely crash the machine by special crafted IPX network packets [#197809].
and the following non security bugs:
  • Fix dumps with DUMP_LEVEL=2 [#93666] (LTC16184)
  • Fixed: Server crash with "__alloc_pages: 1-order allocation failed (gfp=0x1f0/0)" errors [#159193]

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.*.i586.rpm for the default kernel image, or
  • rpm -Fhv k_athlon-2.4.*.i586.rpm for the AMD Athlon optimized kernel image, or
  • rpm -Fhv k_smp-2.4.*.i586.rpm for the SMP kernel image, or
  • rpm -Fhv k_psmp-2.4.*.i586.rpm for the PSMP kernel image
Please do only install one of these kernels, not all of them.
In case you are using LILO as bootmanager, please make sure that you also execute the command
lilo
after installing the update 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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