Security update for Linux kernel

Knowledgebase

(Last modified: 31AUG2006)

solutions Security update for Linux kernel SuSE Linux Maintenance Web (14f276ed108cb62104b1743ee48bd92b)

Applies to

Package: kernel-s390x
kernel-source
kernel-syms
Product(s): SUSE CORE 9 for IBM zSeries 64bit
Patch: patch-11195
Release: 20060831
Obsoletes: none

Indications

Everyone using the Linux Kernel on s390x architecture should 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:

disable reading from /proc/sys/vm/toss_page_cache_nodes [#199686]
patches.suse/delayed-atime-3: fixed a typo [#197710]
Enable context-dependent symlinks in OCFS2 [#195081]
Enable watchdog on IBM x460 for i386/x86-64 [#194555]
Fix knfsd intermittently returns ENOENT on GETATTR of valid file or directory [#193934]
fix race on link [#191713]
A set of NFS fixes: [#189132]
- VFS: Ensure LOOKUP_CONTINUE flag is preserved by link_path_walk()
- Optimise away an excessive GETATTR call when a file is symlinked
- Cleanup initialisation of struct nfs_fattr
- Convert cache_change_attribute into a jiffy-based value
- Make nfs_fattr record the time at which the rpc call started
- Optimise inode attribute cache updates
- Remove redundant 'verifier' argument to nfs_update_inode()
- Don't let nfs_end_data_update() clobber attribute update information
- Optimise attribute revalidation on close().
forcedeth: fix random memory scribbling bug [#188013]
Fix problem with /proc/scsi remove-single-device [#186236]
Fix possible work queue corruption resulting in oops. [#183391]
sun disk label fix: use unsigned rather than signed int for sector count. [#183366]
Updated: Page cache locking fix [#183048]
CKRM: Free argv stuff at exec if it has been allocated earlier [#182973]
Fix for kernel panic during power-on sequence. [#175925]
Updated the double completion fix for fusion driver [#172910]
Fix race in pagevec_strip [#158289]
Fix reiserfs latencies caused by data=ordered [#154374]
Fixed: sysctl_overcommit_memory is set to OVERCOMMIT_NEVER [#153342]
Fix return value for 'mt tell' ioctl [#145383]
reiserfs: fix transaction overflowing [#145070]
ignore multiple COMM_START_WRITE_NETDUMP_ACK packets [#138321]
Make portmap requests 'hard' when nfs filesystem is mounted 'hard' [#95374]

Fixes for S/390:

Added latest patchset from IBM: Patchcluster 39
- Problem-ID: 25393 - xpram: module parameter parsing.
- 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.
- Problem-ID: 25564 - qeth: race during setup of qeth device
- Problem-ID: 25599 - zfcp: ERP "deadlock" when registering a scsi device
- Problem-ID: 22069 - zfcp: duplicate usage of zfcp's scsi_er_timer
- 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: 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: 26014 - qeth: stack trace with msg "inconsistent lock state"
- Problem-ID: 26103 - cio: I/O stall due to lost interupt after CHPID vary off/on cycle
- Problem-ID: 26118 - dasd: kernel BUG when setting a DASD device offline.
- Problem-ID: 19628 - zfcp: reopen adapter 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.

For further description of the named Problem-IDs, please have a look at
http://www-128.ibm.com/developerworks/linux/linux390/april2004_recommended.html

In the former Kernel the HZ_TIMER was switched on by default. This 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

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 by using this command:


rpm -Fvh kernel-s390x.rpm kernel-source.rpm kernel-syms.rpm

zipl

When rebooting the Linux on zSeries z/VM guests, please ensure that you have installed the PTFs for APAR VM63742:

z/VM 4.4: UM31426
z/VM 5.1: UM31428

Otherwise re-boot under z/VM will not work anymore.
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

SUSE Linux Enterprise Server 9 for IBM zSeries 64bit (s390x)

Download Source Packages

Download the source code of the patches for maintained products.

Disclaimer

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