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Linux Compatible » News » May 2008 » RHSA-2008:0211-01 Important: kernel security and bug fix update

RHSA-2008:0211-01 Important: kernel security and bug fix update

Posted by Bob on: 05/07/2008 09:05 AM [ Print | 0 comment(s) ]

A new update is available for Red Hat Enterprise Linux. Here the announcement:




-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
Red Hat Security Advisory

Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2008:0211-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0211.html
Issue date: 2008-05-07
CVE Names: CVE-2006-4814 CVE-2007-5001 CVE-2007-6151
CVE-2007-6206 CVE-2008-0007 CVE-2008-1367
CVE-2008-1375 CVE-2008-1669
=====================================================================

1. Summary:

Updated kernel packages that fix various security issues and several bugs
are now available for Red Hat Enterprise Linux 3.

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 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, 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)

* 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)

* a flaw was found when performing asynchronous input or output operations
on a FIFO special file. A local unprivileged user could use this flaw to
cause a kernel panic. (CVE-2007-5001, Important)

* a flaw was found in the way core dump files were created. If a local user
could get a root-owned process to dump a core file into a directory, which
the user has write access to, they could gain read access to that core
file. This could potentially grant unauthorized access to sensitive
information. (CVE-2007-6206, Moderate)

* a buffer overflow was found in the Linux kernel ISDN subsystem. A local
unprivileged user could use this flaw to cause a denial of service.
(CVE-2007-6151, Moderate)

* a race condition found in the mincore system core could allow a local
user to cause a denial of service (system hang). (CVE-2006-4814, Moderate)

* it was discovered that the Linux kernel handled string operations in the
opposite way to the GNU Compiler Collection (GCC). This could allow a local
unprivileged user to cause memory corruption. (CVE-2008-1367, Low)

As well, these updated packages fix the following bugs:

* a bug, which caused long delays when unmounting mounts containing a large
number of unused dentries, has been resolved.

* in the previous kernel packages, the kernel was unable to handle certain
floating point instructions on Itanium(R) architectures.

* on certain Intel CPUs, the Translation Lookaside Buffer (TLB) was not
flushed correctly, which caused machine check errors.

Red Hat Enterprise Linux 3 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/):

306971 - CVE-2006-4814 kernel Race condition in mincore can cause "ps -ef" to hang
326251 - CVE-2007-5001 kernel asynchronous IO on a FIFO kernel panic
396861 - CVE-2007-6206 Issue with core dump owner
413731 - RHEL3: System hangs at unmount
425111 - CVE-2007-6151 I4L: fix isdn_ioctl memory issue
428961 - CVE-2008-0007 kernel: insufficient range checks in fault handlers with mremap
437312 - CVE-2008-1367 Kernel doesn't clear DF for signal handlers
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 3:

Source:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/kernel-2.4.21-57.EL.src.rpm

i386:
kernel-2.4.21-57.EL.athlon.rpm
kernel-2.4.21-57.EL.i686.rpm
kernel-BOOT-2.4.21-57.EL.i386.rpm
kernel-debuginfo-2.4.21-57.EL.athlon.rpm
kernel-debuginfo-2.4.21-57.EL.i386.rpm
kernel-debuginfo-2.4.21-57.EL.i686.rpm
kernel-doc-2.4.21-57.EL.i386.rpm
kernel-hugemem-2.4.21-57.EL.i686.rpm
kernel-hugemem-unsupported-2.4.21-57.EL.i686.rpm
kernel-smp-2.4.21-57.EL.athlon.rpm
kernel-smp-2.4.21-57.EL.i686.rpm
kernel-smp-unsupported-2.4.21-57.EL.athlon.rpm
kernel-smp-unsupported-2.4.21-57.EL.i686.rpm
kernel-source-2.4.21-57.EL.i386.rpm
kernel-unsupported-2.4.21-57.EL.athlon.rpm
kernel-unsupported-2.4.21-57.EL.i686.rpm

ia64:
kernel-2.4.21-57.EL.ia64.rpm
kernel-debuginfo-2.4.21-57.EL.ia64.rpm
kernel-doc-2.4.21-57.EL.ia64.rpm
kernel-source-2.4.21-57.EL.ia64.rpm
kernel-unsupported-2.4.21-57.EL.ia64.rpm

ppc:
kernel-2.4.21-57.EL.ppc64iseries.rpm
kernel-2.4.21-57.EL.ppc64pseries.rpm
kernel-debuginfo-2.4.21-57.EL.ppc64.rpm
kernel-debuginfo-2.4.21-57.EL.ppc64iseries.rpm
kernel-debuginfo-2.4.21-57.EL.ppc64pseries.rpm
kernel-doc-2.4.21-57.EL.ppc64.rpm
kernel-source-2.4.21-57.EL.ppc64.rpm
kernel-unsupported-2.4.21-57.EL.ppc64iseries.rpm
kernel-unsupported-2.4.21-57.EL.ppc64pseries.rpm

s390:
kernel-2.4.21-57.EL.s390.rpm
kernel-debuginfo-2.4.21-57.EL.s390.rpm
kernel-doc-2.4.21-57.EL.s390.rpm
kernel-source-2.4.21-57.EL.s390.rpm
kernel-unsupported-2.4.21-57.EL.s390.rpm

s390x:
kernel-2.4.21-57.EL.s390x.rpm
kernel-debuginfo-2.4.21-57.EL.s390x.rpm
kernel-doc-2.4.21-57.EL.s390x.rpm
kernel-source-2.4.21-57.EL.s390x.rpm
kernel-unsupported-2.4.21-57.EL.s390x.rpm

x86_64:
kernel-2.4.21-57.EL.ia32e.rpm
kernel-2.4.21-57.EL.x86_64.rpm
kernel-debuginfo-2.4.21-57.EL.ia32e.rpm
kernel-debuginfo-2.4.21-57.EL.x86_64.rpm
kernel-doc-2.4.21-57.EL.x86_64.rpm
kernel-smp-2.4.21-57.EL.x86_64.rpm
kernel-smp-unsupported-2.4.21-57.EL.x86_64.rpm
kernel-source-2.4.21-57.EL.x86_64.rpm
kernel-unsupported-2.4.21-57.EL.ia32e.rpm
kernel-unsupported-2.4.21-57.EL.x86_64.rpm

Red Hat Desktop version 3:

Source:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/kernel-2.4.21-57.EL.src.rpm

i386:
kernel-2.4.21-57.EL.athlon.rpm
kernel-2.4.21-57.EL.i686.rpm
kernel-BOOT-2.4.21-57.EL.i386.rpm
kernel-debuginfo-2.4.21-57.EL.athlon.rpm
kernel-debuginfo-2.4.21-57.EL.i386.rpm
kernel-debuginfo-2.4.21-57.EL.i686.rpm
kernel-doc-2.4.21-57.EL.i386.rpm
kernel-hugemem-2.4.21-57.EL.i686.rpm
kernel-hugemem-unsupported-2.4.21-57.EL.i686.rpm
kernel-smp-2.4.21-57.EL.athlon.rpm
kernel-smp-2.4.21-57.EL.i686.rpm
kernel-smp-unsupported-2.4.21-57.EL.athlon.rpm
kernel-smp-unsupported-2.4.21-57.EL.i686.rpm
kernel-source-2.4.21-57.EL.i386.rpm
kernel-unsupported-2.4.21-57.EL.athlon.rpm
kernel-unsupported-2.4.21-57.EL.i686.rpm

x86_64:
kernel-2.4.21-57.EL.ia32e.rpm
kernel-2.4.21-57.EL.x86_64.rpm
kernel-debuginfo-2.4.21-57.EL.ia32e.rpm
kernel-debuginfo-2.4.21-57.EL.x86_64.rpm
kernel-doc-2.4.21-57.EL.x86_64.rpm
kernel-smp-2.4.21-57.EL.x86_64.rpm
kernel-smp-unsupported-2.4.21-57.EL.x86_64.rpm
kernel-source-2.4.21-57.EL.x86_64.rpm
kernel-unsupported-2.4.21-57.EL.ia32e.rpm
kernel-unsupported-2.4.21-57.EL.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

Source:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/kernel-2.4.21-57.EL.src.rpm

i386:
kernel-2.4.21-57.EL.athlon.rpm
kernel-2.4.21-57.EL.i686.rpm
kernel-BOOT-2.4.21-57.EL.i386.rpm
kernel-debuginfo-2.4.21-57.EL.athlon.rpm
kernel-debuginfo-2.4.21-57.EL.i386.rpm
kernel-debuginfo-2.4.21-57.EL.i686.rpm
kernel-doc-2.4.21-57.EL.i386.rpm
kernel-hugemem-2.4.21-57.EL.i686.rpm
kernel-hugemem-unsupported-2.4.21-57.EL.i686.rpm
kernel-smp-2.4.21-57.EL.athlon.rpm
kernel-smp-2.4.21-57.EL.i686.rpm
kernel-smp-unsupported-2.4.21-57.EL.athlon.rpm
kernel-smp-unsupported-2.4.21-57.EL.i686.rpm
kernel-source-2.4.21-57.EL.i386.rpm
kernel-unsupported-2.4.21-57.EL.athlon.rpm
kernel-unsupported-2.4.21-57.EL.i686.rpm

ia64:
kernel-2.4.21-57.EL.ia64.rpm
kernel-debuginfo-2.4.21-57.EL.ia64.rpm
kernel-doc-2.4.21-57.EL.ia64.rpm
kernel-source-2.4.21-57.EL.ia64.rpm
kernel-unsupported-2.4.21-57.EL.ia64.rpm

x86_64:
kernel-2.4.21-57.EL.ia32e.rpm
kernel-2.4.21-57.EL.x86_64.rpm
kernel-debuginfo-2.4.21-57.EL.ia32e.rpm
kernel-debuginfo-2.4.21-57.EL.x86_64.rpm
kernel-doc-2.4.21-57.EL.x86_64.rpm
kernel-smp-2.4.21-57.EL.x86_64.rpm
kernel-smp-unsupported-2.4.21-57.EL.x86_64.rpm
kernel-source-2.4.21-57.EL.x86_64.rpm
kernel-unsupported-2.4.21-57.EL.ia32e.rpm
kernel-unsupported-2.4.21-57.EL.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

Source:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/kernel-2.4.21-57.EL.src.rpm

i386:
kernel-2.4.21-57.EL.athlon.rpm
kernel-2.4.21-57.EL.i686.rpm
kernel-BOOT-2.4.21-57.EL.i386.rpm
kernel-debuginfo-2.4.21-57.EL.athlon.rpm
kernel-debuginfo-2.4.21-57.EL.i386.rpm
kernel-debuginfo-2.4.21-57.EL.i686.rpm
kernel-doc-2.4.21-57.EL.i386.rpm
kernel-hugemem-2.4.21-57.EL.i686.rpm
kernel-hugemem-unsupported-2.4.21-57.EL.i686.rpm
kernel-smp-2.4.21-57.EL.athlon.rpm
kernel-smp-2.4.21-57.EL.i686.rpm
kernel-smp-unsupported-2.4.21-57.EL.athlon.rpm
kernel-smp-unsupported-2.4.21-57.EL.i686.rpm
kernel-source-2.4.21-57.EL.i386.rpm
kernel-unsupported-2.4.21-57.EL.athlon.rpm
kernel-unsupported-2.4.21-57.EL.i686.rpm

ia64:
kernel-2.4.21-57.EL.ia64.rpm
kernel-debuginfo-2.4.21-57.EL.ia64.rpm
kernel-doc-2.4.21-57.EL.ia64.rpm
kernel-source-2.4.21-57.EL.ia64.rpm
kernel-unsupported-2.4.21-57.EL.ia64.rpm

x86_64:
kernel-2.4.21-57.EL.ia32e.rpm
kernel-2.4.21-57.EL.x86_64.rpm
kernel-debuginfo-2.4.21-57.EL.ia32e.rpm
kernel-debuginfo-2.4.21-57.EL.x86_64.rpm
kernel-doc-2.4.21-57.EL.x86_64.rpm
kernel-smp-2.4.21-57.EL.x86_64.rpm
kernel-smp-unsupported-2.4.21-57.EL.x86_64.rpm
kernel-source-2.4.21-57.EL.x86_64.rpm
kernel-unsupported-2.4.21-57.EL.ia32e.rpm
kernel-unsupported-2.4.21-57.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-2006-4814
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5001
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6151
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6206
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0007
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1367
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1375
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 lt;secalert@redhat.comgt;. More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2008 Red Hat, Inc.
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Version: GnuPG v1.4.4 (GNU/Linux)

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ku1MKisAK/HECsk5IhuieJo=
=ld1g
-----END PGP SIGNATURE-----


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