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Security update for Linux kernel


(Last modified: 31AUG2006)

solutions Security update for Linux kernel SuSE Linux Maintenance Web (d501672f20f1f468d24344550dbc92e0)

Applies to

Package: kernel-s390
Product(s): SUSE CORE 9 for IBM S/390 31bit
Patch: patch-11194
Release: 20060831
Obsoletes: none


Everyone using the Linux Kernel on s390 architecture should update.



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
  • 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)


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

Download Source Packages

Download the source code of the patches for maintained products.


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