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Security Advisory kernel security update

Advisory: RHSA-2005:284-11
Type: Security Advisory
Severity: Important
Issued on: 2005-04-28
Last updated on: 2005-04-28
Affected Products: Red Hat Enterprise Linux AS (v. 2.1)
Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor
CVEs (cve.mitre.org): CVE-2005-0135
CVE-2005-0137
CVE-2005-0384
CVE-2005-0449
CVE-2005-0750

Details

Updated kernel packages are now available as part of ongoing support and
maintenance of Red Hat Enterprise Linux version 2.1 for 64-bit
architectures. This is the seventh regular update.

This security advisory has been rated as having important security impact
by the Red Hat Security Response Team.

The Linux kernel handles the basic functions of the operating system.

This is the seventh regular kernel update to Red Hat Enterprise Linux 2.1.

The following security updates were made:

A flaw in fragment queuing was discovered that affected the Linux 2.4 and
Linux 2.6 kernel netfilter subsystem. On systems configured to filter or
process network packets (for example, those configured to do firewalling),
a remote attacker could send a carefully crafted set of fragmented packets
to a machine and cause a denial of service (system crash). In order to
sucessfully exploit this flaw, the attacker would need to know (or guess)
some aspects of the firewall ruleset in place on the target system to be
able to craft the right fragmented packets. (CAN-2005-0449)

A flaw was discovered in the Linux PPP driver. On systems allowing remote
users to connect to a server using ppp, a remote client could cause a
denial of service (system crash). (CAN-2005-0384)

A flaw was discovered in the bluetooth driver system. On systems where the
bluetooth modules are loaded, a local user could use this flaw to gain
elevated (root) privileges. (CAN-2005-0750)

Keith Owens reported a flaw in the Itanium unw_unwind_to_user() function.
A local user could use this flaw to cause a denial of service (system
crash). (CAN-2005-0135)

A missing Itanium syscall table entry could allow an unprivileged
local user to cause a denial of service (system crash). (CAN-2005-0137)

There were several bug fixes in various parts of the kernel. The ongoing
effort to resolve these problems has resulted in a marked improvement
in the reliability and scalability of Red Hat Enterprise Linux 2.1.

Bug fixes for this release include:

- Fixes an incorrect test in RPC for SYN packets when reconnecting
an idle TCP link
- Fixes a memory-corruption bug in the DMA path that can cause
system hangs or unpredictable behavior under heavy I/O load
- Adds new devices to the SCSI scan list so they can
be initialized and handled properly: LSI ProFibre 4000R, HP
HSV200/210, HP MSA, STK OPENstorage D178.
- Fixes a hang under heavy I/O load in the qla1280 driver
- Fixes a panic in disk quota code
- Fixes a potential format overflow in /proc/partitions
- Fixes ipvs calls to ip_defrag()

All Red Hat Enterprise Linux 2.1 users are advised to upgrade their
kernels to the packages associated with their machine architectures
and configurations as listed in this erratum.

Please note that a vulnerability addressed by this update (CAN-2005-0449)
required a change to the kernel module ABI which could cause third party
modules to not work. However, Red Hat is currently not aware of any module
that would be affected by this change.


Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise

Updated packages

Red Hat Enterprise Linux AS (v. 2.1)

SRPMS:
kernel-2.4.18-e.56.src.rpm
File outdated by:  RHSA-2008:0787
    MD5: f365099f940d4e423cc3be53a10116ea
 
IA-64:
kernel-2.4.18-e.56.ia64.rpm
File outdated by:  RHSA-2008:0787
    MD5: ac9ee030a03260952fce4c72ec8f5ef5
kernel-doc-2.4.18-e.56.ia64.rpm
File outdated by:  RHSA-2008:0787
    MD5: 62460cbfcc0c379434e2e77e39ca9a1a
kernel-smp-2.4.18-e.56.ia64.rpm
File outdated by:  RHSA-2008:0787
    MD5: c001f4b6c8b442a5d81ae2211b8210e2
kernel-source-2.4.18-e.56.ia64.rpm
File outdated by:  RHSA-2008:0787
    MD5: a9e199cec346086dcf09e3735a1bcbcd
 
Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor

SRPMS:
kernel-2.4.18-e.56.src.rpm
File outdated by:  RHSA-2008:0787
    MD5: f365099f940d4e423cc3be53a10116ea
 
IA-64:
kernel-2.4.18-e.56.ia64.rpm
File outdated by:  RHSA-2008:0787
    MD5: ac9ee030a03260952fce4c72ec8f5ef5
kernel-doc-2.4.18-e.56.ia64.rpm
File outdated by:  RHSA-2008:0787
    MD5: 62460cbfcc0c379434e2e77e39ca9a1a
kernel-smp-2.4.18-e.56.ia64.rpm
File outdated by:  RHSA-2008:0787
    MD5: c001f4b6c8b442a5d81ae2211b8210e2
kernel-source-2.4.18-e.56.ia64.rpm
File outdated by:  RHSA-2008:0787
    MD5: a9e199cec346086dcf09e3735a1bcbcd
 

Bugs fixed (see bugzilla for more information)

148860 - CAN-2005-0137 ia64 syscall_table DoS
148870 - CAN-2005-0135 ia64 local DoS
151243 - CAN-2005-0384 pppd remote DoS (ipf)
151804 - CAN-2005-0449 Possible remote Oops/firewall bypass - kABI breaker - ipf
152180 - CAN-2005-0750 bluetooth security flaw (ipf)


References



These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/