[RHSA-2008:0233-01] Important: kernel security and bug fix update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Important: kernel security and bug fix update

Advisory ID: RHSA-2008:0233-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0233.html

Issue date: 2008-05-07

CVE Names: CVE-2007-5498 CVE-2008-0007 CVE-2008-1367

CVE-2008-1375 CVE-2008-1619 CVE-2008-1669

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

 

1. Summary:

 

Updated kernel packages that fix various security issues and several bugs

are now available for Red Hat Enterprise Linux 5.

 

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 Desktop (v. 5 client) - i386, noarch, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, noarch, ppc, s390x, 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)

 

* a possible hypervisor panic was found in the Linux kernel. A privileged

user of a fully virtualized guest could initiate a stress-test File

Transfer Protocol (FTP) transfer between the guest and the hypervisor,

possibly leading to hypervisor panic. (CVE-2008-1619, 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 absence of sanity-checks was found in the hypervisor block backend

driver, when running 32-bit paravirtualized guests on a 64-bit host. The

number of blocks to be processed per one request from guest to host, or

vice-versa, was not checked for its maximum value, which could have allowed

a local privileged user of the guest operating system to cause a denial of

service. (CVE-2007-5498, Important)

 

* 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:

 

* on IBM System z architectures, when running QIOASSIST enabled QDIO

devices in an IBM z/VM environment, the output queue stalled under heavy

load. This caused network performance to degrade, possibly causing network

hangs and outages.

 

* multiple buffer overflows were discovered in the neofb video driver. It

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

such, they have not been handled as security issues.

 

* when running Microsoft Windows in a HVM, a bug in vmalloc/vfree caused

network performance to degrade.

 

* on certain architectures, a bug in the libATA sata_nv driver may have

caused infinite reboots, and an "ata1: CPB flags CMD err flags 0x11" error.

 

* repeatedly hot-plugging a PCI Express card may have caused "Bad DLLP"

errors.

 

* a NULL pointer dereference in NFS, which may have caused applications to

crash, has been resolved.

 

* when attempting to kexec reboot, either manually or via a panic-triggered

kdump, the Unisys ES7000/one hanged after rebooting in the new kernel,

after printing the "Memory: 32839688k/33685504k available" line.

 

Red Hat Enterprise Linux 5 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/):

 

369531 - CVE-2007-5498 missing sanity check in xen block backend driver

412071 - LTC37008-QDIO based network connections hang with QIOASSIST ON

427400 - CVE-2008-1619 [xen-ia64] Dom0 panic while we run ftp test tool between HVM and Dom0.

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

433616 - [Xen] vmalloc/vfree on HVM Guest/IA64 does untolerate performance.

433617 - libata: sata_nv may send commands with duplicate tags [5.1.z]

437312 - CVE-2008-1367 Kernel doesn't clear DF for signal handlers

437770 - CVE-2008-1619 [xen-ia64] Dom0 panic while we run ftp test tool between HVM and Dom0.

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

440438 - [5.1] PCI Express hotplug driver problem (Bad DLLP) [rhel-5.1.z]

440447 - 2.6.18-53.1.12 crashes on NULL pointer dereference with NFS on the stack [rhel-5.1.z]

442922 - kexec or kdump hangs on ES7000/ONE

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 Desktop (v. 5 client):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/kernel-2.6.18-53.1.19.el5.src.rpm

 

i386:

kernel-2.6.18-53.1.19.el5.i686.rpm

kernel-PAE-2.6.18-53.1.19.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-53.1.19.el5.i686.rpm

kernel-PAE-devel-2.6.18-53.1.19.el5.i686.rpm

kernel-debug-2.6.18-53.1.19.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-53.1.19.el5.i686.rpm

kernel-debug-devel-2.6.18-53.1.19.el5.i686.rpm

kernel-debuginfo-2.6.18-53.1.19.el5.i686.rpm

kernel-debuginfo-common-2.6.18-53.1.19.el5.i686.rpm

kernel-devel-2.6.18-53.1.19.el5.i686.rpm

kernel-headers-2.6.18-53.1.19.el5.i386.rpm

kernel-xen-2.6.18-53.1.19.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-53.1.19.el5.i686.rpm

kernel-xen-devel-2.6.18-53.1.19.el5.i686.rpm

 

noarch:

kernel-doc-2.6.18-53.1.19.el5.noarch.rpm

 

x86_64:

kernel-2.6.18-53.1.19.el5.x86_64.rpm

kernel-debug-2.6.18-53.1.19.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-53.1.19.el5.x86_64.rpm

kernel-debug-devel-2.6.18-53.1.19.el5.x86_64.rpm

kernel-debuginfo-2.6.18-53.1.19.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-53.1.19.el5.x86_64.rpm

kernel-devel-2.6.18-53.1.19.el5.x86_64.rpm

kernel-headers-2.6.18-53.1.19.el5.x86_64.rpm

kernel-xen-2.6.18-53.1.19.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-53.1.19.el5.x86_64.rpm

kernel-xen-devel-2.6.18-53.1.19.el5.x86_64.rpm

 

Red Hat Enterprise Linux (v. 5 server):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/kernel-2.6.18-53.1.19.el5.src.rpm

 

i386:

kernel-2.6.18-53.1.19.el5.i686.rpm

kernel-PAE-2.6.18-53.1.19.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-53.1.19.el5.i686.rpm

kernel-PAE-devel-2.6.18-53.1.19.el5.i686.rpm

kernel-debug-2.6.18-53.1.19.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-53.1.19.el5.i686.rpm

kernel-debug-devel-2.6.18-53.1.19.el5.i686.rpm

kernel-debuginfo-2.6.18-53.1.19.el5.i686.rpm

kernel-debuginfo-common-2.6.18-53.1.19.el5.i686.rpm

kernel-devel-2.6.18-53.1.19.el5.i686.rpm

kernel-headers-2.6.18-53.1.19.el5.i386.rpm

kernel-xen-2.6.18-53.1.19.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-53.1.19.el5.i686.rpm

kernel-xen-devel-2.6.18-53.1.19.el5.i686.rpm

 

ia64:

kernel-2.6.18-53.1.19.el5.ia64.rpm

kernel-debug-2.6.18-53.1.19.el5.ia64.rpm

kernel-debug-debuginfo-2.6.18-53.1.19.el5.ia64.rpm

kernel-debug-devel-2.6.18-53.1.19.el5.ia64.rpm

kernel-debuginfo-2.6.18-53.1.19.el5.ia64.rpm

kernel-debuginfo-common-2.6.18-53.1.19.el5.ia64.rpm

kernel-devel-2.6.18-53.1.19.el5.ia64.rpm

kernel-headers-2.6.18-53.1.19.el5.ia64.rpm

kernel-xen-2.6.18-53.1.19.el5.ia64.rpm

kernel-xen-debuginfo-2.6.18-53.1.19.el5.ia64.rpm

kernel-xen-devel-2.6.18-53.1.19.el5.ia64.rpm

 

noarch:

kernel-doc-2.6.18-53.1.19.el5.noarch.rpm

 

ppc:

kernel-2.6.18-53.1.19.el5.ppc64.rpm

kernel-debug-2.6.18-53.1.19.el5.ppc64.rpm

kernel-debug-debuginfo-2.6.18-53.1.19.el5.ppc64.rpm

kernel-debug-devel-2.6.18-53.1.19.el5.ppc64.rpm

kernel-debuginfo-2.6.18-53.1.19.el5.ppc64.rpm

kernel-debuginfo-common-2.6.18-53.1.19.el5.ppc64.rpm

kernel-devel-2.6.18-53.1.19.el5.ppc64.rpm

kernel-headers-2.6.18-53.1.19.el5.ppc.rpm

kernel-headers-2.6.18-53.1.19.el5.ppc64.rpm

kernel-kdump-2.6.18-53.1.19.el5.ppc64.rpm

kernel-kdump-debuginfo-2.6.18-53.1.19.el5.ppc64.rpm

kernel-kdump-devel-2.6.18-53.1.19.el5.ppc64.rpm

 

s390x:

kernel-2.6.18-53.1.19.el5.s390x.rpm

kernel-debug-2.6.18-53.1.19.el5.s390x.rpm

kernel-debug-debuginfo-2.6.18-53.1.19.el5.s390x.rpm

kernel-debug-devel-2.6.18-53.1.19.el5.s390x.rpm

kernel-debuginfo-2.6.18-53.1.19.el5.s390x.rpm

kernel-debuginfo-common-2.6.18-53.1.19.el5.s390x.rpm

kernel-devel-2.6.18-53.1.19.el5.s390x.rpm

kernel-headers-2.6.18-53.1.19.el5.s390x.rpm

 

x86_64:

kernel-2.6.18-53.1.19.el5.x86_64.rpm

kernel-debug-2.6.18-53.1.19.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-53.1.19.el5.x86_64.rpm

kernel-debug-devel-2.6.18-53.1.19.el5.x86_64.rpm

kernel-debuginfo-2.6.18-53.1.19.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-53.1.19.el5.x86_64.rpm

kernel-devel-2.6.18-53.1.19.el5.x86_64.rpm

kernel-headers-2.6.18-53.1.19.el5.x86_64.rpm

kernel-xen-2.6.18-53.1.19.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-53.1.19.el5.x86_64.rpm

kernel-xen-devel-2.6.18-53.1.19.el5.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-2007-5498

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-2008-1619

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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