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Security update for Linux Kernel (s390x)

Knowledgebase

(Last modified: 04SEP2006)


solutions Security update for Linux Kernel (s390x) SuSE Linux Maintenance Web (3681897a438bf798b938ff818b83dd7e)

Applies to

Package: kernel-default
kernel-source
kernel-syms
Product(s): SUSE SLE 10 DEBUGINFO for IBM zSeries 64bit
SUSE SLES 10 for IBM zSeries 64bit

Release: 20060904
Obsoletes: none

Indications

Everyone should install this security update.

Contraindications

None.

Problem description

This kernel update fixes the following security problems:
  • CVE-2006-3745: A double userspace copy in a SCTP ioctl allows local attackers to overflow a buffer in the kernel, potentially allowing code execution and privilege escalation. [#199441]
  • CVE-2006-4093: Local attackers were able to crash PowerPC systems with PPC970 processor using a not correctly disabled privileged instruction ("attn"). [#197810]
  • 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]
and the following non security bugs:
  • XEN patches/fixes:
    • kunmap_atomic() must zap the PTE to avoid dangling references.
    • patches.xen/xen-balloon-max-target: Expose limit domain can be ballooned up to [#152667]
  • Fix oops on io scheduler unload on a process without ioc (backport)
  • OCFS2 updated to to version 1.2.3.
  • update patches.arch/ppc-update_gtod-race.patch: restrict to 64bit only because it leads to deadlocks on ppc32 [#202146]
  • Fix MCA recovery in context switch path [#199472]
  • fix gettimeofday vs. update_gtod race [#197699]
  • LKCD: dump all slab pages. [#196330]
  • Make idle io be lowest priority best-effort [#195387]
  • Fix dropping of wrong cic. [#195387]
  • Fix stale file handle problem with subtree_checking. [#195040]
  • Remove Altix PROM bit that can race on MCAs. [#193296]
  • Prevent silent data corruption caused by XPC. [#193132]
  • Fix race condition during COW [#192259]
  • sched: fix group power for allnodes_domains [#191929]
  • Allow dma_alloc_coherent() to work for regions up to 2MB. [#191615]
  • fix ABBA deadlock between cpuset callback_sem and hotplug cpucontrol mutex [#191582]
  • Check for existing sysfs directory prior to creating one [#191360]
  • Fix possible NFS panic in readdir. [#189951]
  • MPT driver: Fix oops on module loading [#189534]
  • SUNRPC: Ensure that rpc_mkpipe returns a refcounted dentry [#183013]
  • Pass file mode on DMAPI remove events [#182691]
  • MPT driver: Fix oops during error recovery [#177919]
  • flush icache on POWER4 cpus to fix itrace crash [#171699]
  • KPROBES: Fix system panic if user doing copy_from_user in the probe handlers [#171483]
  • Avoid possible soft-lockup, particularly related to md [#152099]
  • reiserfs: fix transaction overflowing [#145070]
Additional fixes for s390x:
  • IBM Patchcluster 6
    • Problem-ID: 25393 - xpram: module parameter parsing.
    • Problem-ID: 23720 - zfcp: failed paths remain unavailable
    • Problem-ID: 23989 - zfcp: ERP "deadlock" when registering a scsi device or remote port (partII)
    • Problem-ID: 24645 - qeth: qethconf not adding ipa entries
    • Problem-ID: 25507 - cio: 5 min timeout after setting chpid offline.
    • Problem-ID: 25511 - cio: Fix some path grouping and path verification related problems.
  • IBM Patchcluster 7
    • Problem-ID: 25564 - qeth: race during setup of qeth device
    • Problem-ID: 25799 - iucv: multiple interfaces with same peer established
    • Problem-ID: 25801 - cio: permanent subchannel busy conditions may cause I/O stall
    • Problem-ID: 23575 - cio: module containing ccwgroup driver cannot be unloaded.
    • Problem-ID: 25802 - cio: Disallow ccwgroup devices containing non-unique ccw devices.
    • Problem-ID: 26016 - qeth: race when reboot and recovery run concurrently
    • Problem-ID: 26068 - qeth: kernel panic under heavy UDP workload
    • Problem-ID: 26103 - cio: I/O stall due to lost interupt after CHPID vary off/on cycle
    • Problem-ID: 26014 - qeth: stack trace with msg "inconsistent lock state"
    • Problem-ID: 26118 - dasd: kernel BUG when setting a DASD device offline.
    • Problem-ID: 19628 - zfcp: do adapter reopen on do_QDIO error
    • Problem-ID: 26144 - qeth: Setrouting for ipv6 invalid on hipersockets.
    • Problem-ID: 23427, 24855 - cio: Inconsistent values in channel measurement facility.
    • Problem-ID: 24511 - dasd: Cleanup queue fails during offline processing.
For further describtion of the named Problem-IDs, please refer to
http://www-128.ibm.com/developerworks/linux/linux390/april2004_recommended.html
In the previous kernel versions HZ_TIMER was switched on by default. It is now switched off. (see cat /proc/sys/kernel/hz_timer on the system)

Solution

Please install the updates provided at the location noted below.

Installation notes

This update is provided as a RPM packages that can easily be installed onto a running system by the following command:
rpm -Fvh kernel-syms*.rpm kernel-default*.rpm
Afterwards, 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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