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Linux Compatible » News » April 2005 » RHSA-2005:284-01: Important: kernel security update

RHSA-2005:284-01: Important: kernel security update

Posted by Philipp Esselbach on: 04/28/2005 02:20 PM [ Print | 0 comment(s) ]

An updated 64 Bit kernel is available for Red Hat Enterprise Linux 2.1

----------------------------------------------------------------------
Red Hat Security Advisory

Synopsis: Important: kernel security update
Advisory ID: RHSA-2005:284-01
Advisory URL: https://rhn.redhat.com/errata/RHSA-2005-284.html
Issue date: 2005-04-28
Updated on: 2005-04-28
Product: Red Hat Enterprise Linux
CVE Names: CAN-2005-0135 CAN-2005-0137 CAN-2005-0384 CAN-2005-0449 CAN-2005-0750
----------------------------------------------------------------------

1. Summary:

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - ia64
Red Hat Linux Advanced Workstation 2.1 - ia64




3. Problem description:

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.

4. 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

5. Bug IDs fixed (http://bugzilla.redhat.com/):

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

6. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/kernel-2.4.18-e.56.src.rpm
f365099f940d4e423cc3be53a10116ea kernel-2.4.18-e.56.src.rpm

ia64:
ac9ee030a03260952fce4c72ec8f5ef5 kernel-2.4.18-e.56.ia64.rpm
62460cbfcc0c379434e2e77e39ca9a1a kernel-doc-2.4.18-e.56.ia64.rpm
c001f4b6c8b442a5d81ae2211b8210e2 kernel-smp-2.4.18-e.56.ia64.rpm
a9e199cec346086dcf09e3735a1bcbcd kernel-source-2.4.18-e.56.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/kernel-2.4.18-e.56.src.rpm
f365099f940d4e423cc3be53a10116ea kernel-2.4.18-e.56.src.rpm

ia64:
ac9ee030a03260952fce4c72ec8f5ef5 kernel-2.4.18-e.56.ia64.rpm
62460cbfcc0c379434e2e77e39ca9a1a kernel-doc-2.4.18-e.56.ia64.rpm
c001f4b6c8b442a5d81ae2211b8210e2 kernel-smp-2.4.18-e.56.ia64.rpm
a9e199cec346086dcf09e3735a1bcbcd kernel-source-2.4.18-e.56.ia64.rpm

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

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0135
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0137
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0384
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0449
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0750

8. Contact:

The Red Hat security contact is lt;secalert@redhat.comgt;. More contact details at https://www.redhat.com/security/team/contact/

Copyright 2005 Red Hat, Inc.


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