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[RHSA-2008:0237-01] Important: kernel security and bug fix update

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Red Hat Security Advisory

 

Synopsis: Important: kernel security and bug fix update

Advisory ID: RHSA-2008:0237-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0237.html

Issue date: 2008-05-07

CVE Names: CVE-2005-0504 CVE-2007-6282 CVE-2008-0007

CVE-2008-1375 CVE-2008-1615 CVE-2008-1669

=====================================================================

 

1. Summary:

 

Updated kernel packages that fix various security issues and several bugs

are now available for Red Hat Enterprise Linux 4.

 

This update has been rated as having important security impact by the Red

Hat Security Response Team.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux AS version 4 - i386, ia64, noarch, ppc, s390, s390x, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, noarch, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, noarch, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, noarch, x86_64

 

3. Description:

 

The kernel packages contain the Linux kernel, the core of any Linux

operating system.

 

These updated packages fix the following security issues:

 

* the absence of a protection mechanism when attempting to access a

critical section of code has been found in the Linux kernel open file

descriptors control mechanism, fcntl. This could allow a local unprivileged

user to simultaneously execute code, which would otherwise be protected

against parallel execution. As well, a race condition when handling locks

in the Linux kernel fcntl functionality, may have allowed a process

belonging to a local unprivileged user to gain re-ordered access to the

descriptor table. (CVE-2008-1669, Important)

 

* on AMD64 architectures, the possibility of a kernel crash was discovered

by testing the Linux kernel process-trace ability. This could allow a local

unprivileged user to cause a denial of service (kernel crash).

(CVE-2008-1615, Important)

 

* the absence of a protection mechanism when attempting to access a

critical section of code, as well as a race condition, have been found

in the Linux kernel file system event notifier, dnotify. This could allow a

local unprivileged user to get inconsistent data, or to send arbitrary

signals to arbitrary system processes. (CVE-2008-1375, Important)

 

Red Hat would like to thank Nick Piggin for responsibly disclosing the

following issue:

 

* when accessing kernel memory locations, certain Linux kernel drivers

registering a fault handler did not perform required range checks. A local

unprivileged user could use this flaw to gain read or write access to

arbitrary kernel memory, or possibly cause a kernel crash.

(CVE-2008-0007, Important)

 

* the possibility of a kernel crash was found in the Linux kernel IPsec

protocol implementation, due to improper handling of fragmented ESP

packets. When an attacker controlling an intermediate router fragmented

these packets into very small pieces, it would cause a kernel crash on the

receiving node during packet reassembly. (CVE-2007-6282, Important)

 

* a flaw in the MOXA serial driver could allow a local unprivileged user

to perform privileged operations, such as replacing firmware.

(CVE-2005-0504, Important)

 

As well, these updated packages fix the following bugs:

 

* multiple buffer overflows in the neofb driver have been resolved. It was

not possible for an unprivileged user to exploit these issues, and as such,

they have not been handled as security issues.

 

* a kernel panic, due to inconsistent detection of AGP aperture size, has

been resolved.

 

* a race condition in UNIX domain sockets may have caused "recv()" to

return zero. In clustered configurations, this may have caused unexpected

failovers.

 

* to prevent link storms, network link carrier events were delayed by up to

one second, causing unnecessary packet loss. Now, link carrier events are

scheduled immediately.

 

* a client-side race on blocking locks caused large time delays on NFS file

systems.

 

* in certain situations, the libATA sata_nv driver may have sent commands

with duplicate tags, which were rejected by SATA devices. This may have

caused infinite reboots.

 

* running the "service network restart" command may have caused networking

to fail.

 

* a bug in NFS caused cached information about directories to be stored

for too long, causing wrong attributes to be read.

 

* on systems with a large highmem/lowmem ratio, NFS write performance may

have been very slow when using small files.

 

* a bug, which caused network hangs when the system clock was wrapped

around zero, has been resolved.

 

Red Hat Enterprise Linux 4 users are advised to upgrade to these updated

packages, which contain backported patches to resolve these issues.

 

4. Solution:

 

Before applying this update, make sure that all previously-released

errata relevant to your system have been applied.

 

This update is available via Red Hat Network. Details on how to use

the Red Hat Network to apply this update are available at

http://kbase.redhat.com/faq/FAQ_58_10188

 

5. Bugs fixed (http://bugzilla.redhat.com/):

 

404291 - CVE-2007-6282 IPSec ESP kernel panics

423111 - CVE-2005-0504 Buffer overflow in moxa driver

428961 - CVE-2008-0007 kernel: insufficient range checks in fault handlers with mremap

431430 - CVE-2008-1615 kernel: ptrace: Unprivileged crash on x86_64 %cs corruption

435122 - [RHEL4.6] In unix domain sockets, recv() may incorrectly return zero

436102 - Fake ARP dropped after migration leading to loss of network connectivity

436129 - LTC41942-30 second flock() calls against files stored on a NetApp while using NFS

436499 - libata: sata_nv may send commands with duplicate tags

436749 - HP-Japan Network stack hang after service network restart

437788 - NFS: Fix directory caching problem - with test case and patch.

438345 - [2.6.9-55.9] VM pagecache reclaim patch causes high latency on systems with large highmem/lowmem ratios

438477 - Since "Patch2037: linux-2.6.9-vm-balance.patch" my NFS performance is poorly

439754 - CVE-2008-1375 kernel: race condition in dnotify (local DoS, local roothole possible)

443433 - CVE-2008-1669 kernel: add rcu_read_lock() to fcheck() in both dnotify, locks.c and fix fcntl store/load race in locks.c

 

6. Package List:

 

Red Hat Enterprise Linux AS version 4:

 

Source:

ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/kernel-2.6.9-67.0.15.EL.src.rpm

 

i386:

kernel-2.6.9-67.0.15.EL.i686.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.i686.rpm

kernel-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-hugemem-2.6.9-67.0.15.EL.i686.rpm

kernel-hugemem-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-smp-2.6.9-67.0.15.EL.i686.rpm

kernel-smp-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-xenU-2.6.9-67.0.15.EL.i686.rpm

kernel-xenU-devel-2.6.9-67.0.15.EL.i686.rpm

 

ia64:

kernel-2.6.9-67.0.15.EL.ia64.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.ia64.rpm

kernel-devel-2.6.9-67.0.15.EL.ia64.rpm

kernel-largesmp-2.6.9-67.0.15.EL.ia64.rpm

kernel-largesmp-devel-2.6.9-67.0.15.EL.ia64.rpm

 

noarch:

kernel-doc-2.6.9-67.0.15.EL.noarch.rpm

 

ppc:

kernel-2.6.9-67.0.15.EL.ppc64.rpm

kernel-2.6.9-67.0.15.EL.ppc64iseries.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.ppc64.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.ppc64iseries.rpm

kernel-devel-2.6.9-67.0.15.EL.ppc64.rpm

kernel-devel-2.6.9-67.0.15.EL.ppc64iseries.rpm

kernel-largesmp-2.6.9-67.0.15.EL.ppc64.rpm

kernel-largesmp-devel-2.6.9-67.0.15.EL.ppc64.rpm

 

s390:

kernel-2.6.9-67.0.15.EL.s390.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.s390.rpm

kernel-devel-2.6.9-67.0.15.EL.s390.rpm

 

s390x:

kernel-2.6.9-67.0.15.EL.s390x.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.s390x.rpm

kernel-devel-2.6.9-67.0.15.EL.s390x.rpm

 

x86_64:

kernel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.x86_64.rpm

kernel-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-largesmp-2.6.9-67.0.15.EL.x86_64.rpm

kernel-largesmp-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-smp-2.6.9-67.0.15.EL.x86_64.rpm

kernel-smp-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-xenU-2.6.9-67.0.15.EL.x86_64.rpm

kernel-xenU-devel-2.6.9-67.0.15.EL.x86_64.rpm

 

Red Hat Enterprise Linux Desktop version 4:

 

Source:

ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/kernel-2.6.9-67.0.15.EL.src.rpm

 

i386:

kernel-2.6.9-67.0.15.EL.i686.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.i686.rpm

kernel-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-hugemem-2.6.9-67.0.15.EL.i686.rpm

kernel-hugemem-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-smp-2.6.9-67.0.15.EL.i686.rpm

kernel-smp-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-xenU-2.6.9-67.0.15.EL.i686.rpm

kernel-xenU-devel-2.6.9-67.0.15.EL.i686.rpm

 

noarch:

kernel-doc-2.6.9-67.0.15.EL.noarch.rpm

 

x86_64:

kernel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.x86_64.rpm

kernel-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-largesmp-2.6.9-67.0.15.EL.x86_64.rpm

kernel-largesmp-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-smp-2.6.9-67.0.15.EL.x86_64.rpm

kernel-smp-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-xenU-2.6.9-67.0.15.EL.x86_64.rpm

kernel-xenU-devel-2.6.9-67.0.15.EL.x86_64.rpm

 

Red Hat Enterprise Linux ES version 4:

 

Source:

ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/kernel-2.6.9-67.0.15.EL.src.rpm

 

i386:

kernel-2.6.9-67.0.15.EL.i686.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.i686.rpm

kernel-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-hugemem-2.6.9-67.0.15.EL.i686.rpm

kernel-hugemem-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-smp-2.6.9-67.0.15.EL.i686.rpm

kernel-smp-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-xenU-2.6.9-67.0.15.EL.i686.rpm

kernel-xenU-devel-2.6.9-67.0.15.EL.i686.rpm

 

ia64:

kernel-2.6.9-67.0.15.EL.ia64.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.ia64.rpm

kernel-devel-2.6.9-67.0.15.EL.ia64.rpm

kernel-largesmp-2.6.9-67.0.15.EL.ia64.rpm

kernel-largesmp-devel-2.6.9-67.0.15.EL.ia64.rpm

 

noarch:

kernel-doc-2.6.9-67.0.15.EL.noarch.rpm

 

x86_64:

kernel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.x86_64.rpm

kernel-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-largesmp-2.6.9-67.0.15.EL.x86_64.rpm

kernel-largesmp-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-smp-2.6.9-67.0.15.EL.x86_64.rpm

kernel-smp-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-xenU-2.6.9-67.0.15.EL.x86_64.rpm

kernel-xenU-devel-2.6.9-67.0.15.EL.x86_64.rpm

 

Red Hat Enterprise Linux WS version 4:

 

Source:

ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/kernel-2.6.9-67.0.15.EL.src.rpm

 

i386:

kernel-2.6.9-67.0.15.EL.i686.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.i686.rpm

kernel-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-hugemem-2.6.9-67.0.15.EL.i686.rpm

kernel-hugemem-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-smp-2.6.9-67.0.15.EL.i686.rpm

kernel-smp-devel-2.6.9-67.0.15.EL.i686.rpm

kernel-xenU-2.6.9-67.0.15.EL.i686.rpm

kernel-xenU-devel-2.6.9-67.0.15.EL.i686.rpm

 

ia64:

kernel-2.6.9-67.0.15.EL.ia64.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.ia64.rpm

kernel-devel-2.6.9-67.0.15.EL.ia64.rpm

kernel-largesmp-2.6.9-67.0.15.EL.ia64.rpm

kernel-largesmp-devel-2.6.9-67.0.15.EL.ia64.rpm

 

noarch:

kernel-doc-2.6.9-67.0.15.EL.noarch.rpm

 

x86_64:

kernel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-debuginfo-2.6.9-67.0.15.EL.x86_64.rpm

kernel-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-largesmp-2.6.9-67.0.15.EL.x86_64.rpm

kernel-largesmp-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-smp-2.6.9-67.0.15.EL.x86_64.rpm

kernel-smp-devel-2.6.9-67.0.15.EL.x86_64.rpm

kernel-xenU-2.6.9-67.0.15.EL.x86_64.rpm

kernel-xenU-devel-2.6.9-67.0.15.EL.x86_64.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=CVE-2005-0504

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6282

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0007

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1375

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1615

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1669

http://www.redhat.com/security/updates/classification/#important

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://www.redhat.com/security/team/contact/

 

Copyright 2008 Red Hat, Inc.

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