[RHSA-2009:1106-01] 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-2009:1106-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2009-1106.html

Issue date: 2009-06-16

CVE Names: CVE-2009-1072 CVE-2009-1192 CVE-2009-1439

CVE-2009-1630 CVE-2009-1633 CVE-2009-1758

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

 

1. Summary:

 

Updated kernel packages that fix several 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.

 

Security fixes:

 

* several flaws were found in the way the Linux kernel CIFS implementation

handles Unicode strings. CIFS clients convert Unicode strings sent by a

server to their local character sets, and then write those strings into

memory. If a malicious server sent a long enough string, it could write

past the end of the target memory region and corrupt other memory areas,

possibly leading to a denial of service or privilege escalation on the

client mounting the CIFS share. (CVE-2009-1439, CVE-2009-1633, Important)

 

* the Linux kernel Network File System daemon (nfsd) implementation did not

drop the CAP_MKNOD capability when handling requests from local,

unprivileged users. This flaw could possibly lead to an information leak or

privilege escalation. (CVE-2009-1072, Moderate)

 

* Frank Filz reported the NFSv4 client was missing a file permission check

for the execute bit in some situations. This could allow local,

unprivileged users to run non-executable files on NFSv4 mounted file

systems. (CVE-2009-1630, Moderate)

 

* a missing check was found in the hypervisor_callback() function in the

Linux kernel provided by the kernel-xen package. This could cause a denial

of service of a 32-bit guest if an application running in that guest

accesses a certain memory location in the kernel. (CVE-2009-1758, Moderate)

 

* a flaw was found in the AGPGART driver. The agp_generic_alloc_page() and

agp_generic_alloc_pages() functions did not zero out the memory pages they

allocate, which may later be available to user-space processes. This flaw

could possibly lead to an information leak. (CVE-2009-1192, Low)

 

Bug fixes:

 

* a race in the NFS client between destroying cached access rights and

unmounting an NFS file system could have caused a system crash. "Busy

inodes" messages may have been logged. (BZ#498653)

 

* nanosleep() could sleep several milliseconds less than the specified time

on Intel Itanium®-based systems. (BZ#500349)

 

* LEDs for disk drives in AHCI mode may have displayed a fault state when

there were no faults. (BZ#500120)

 

* ptrace_do_wait() reported tasks were stopped each time the process doing

the trace called wait(), instead of reporting it once. (BZ#486945)

 

* epoll_wait() may have caused a system lockup and problems for

applications. (BZ#497322)

 

* missing capabilities could possibly allow users with an fsuid other than

0 to perform actions on some file system types that would otherwise be

prevented. (BZ#497271)

 

* on NFS mounted file systems, heavy write loads may have blocked

nfs_getattr() for long periods, causing commands that use stat(2), such as

ls, to hang. (BZ#486926)

 

* in rare circumstances, if an application performed multiple O_DIRECT

reads per virtual memory page and also performed fork(2), the buffer

storing the result of the I/O may have ended up with invalid data.

(BZ#486921)

 

* when using GFS2, gfs2_quotad may have entered an uninterpretable sleep

state. (BZ#501742)

 

* with this update, get_random_int() is more random and no longer uses a

common seed value, reducing the possibility of predicting the values

returned. (BZ#499783)

 

* the "-fwrapv" flag was added to the gcc build options to prevent gcc from

optimizing away wrapping. (BZ#501751)

 

* a kernel panic when enabling and disabling iSCSI paths. (BZ#502916)

 

* using the Broadcom NetXtreme BCM5704 network device with the tg3 driver

caused high system load and very bad performance. (BZ#502837)

 

* "/proc/[pid]/maps" and "/proc/[pid]/smaps" can only be read by processes

able to use the ptrace() call on a given process; however, certain

information from "/proc/[pid]/stat" and "/proc/[pid]/wchan" could be used

to reconstruct memory maps. (BZ#499546)

 

Users should upgrade to these updated packages, which contain backported

patches to correct these issues. The system must be rebooted for this

update to take effect.

 

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/docs/DOC-11259

 

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

 

486921 - Corruption on ext3/xfs with O_DIRECT and unaligned user buffers

486926 - [RHEL5.2] nfs_getattr() hangs during heavy write workloads

486945 - waitpid() reports stopped process more than once

491572 - CVE-2009-1072 kernel: nfsd should drop CAP_MKNOD for non-root

494275 - CVE-2009-1439 kernel: cifs: memory overwrite when saving nativeFileSystem field during mount

496572 - CVE-2009-1633 kernel: cifs: fix potential buffer overruns when converting unicode strings sent by server

497020 - CVE-2009-1192 kernel: agp: zero pages before sending to userspace

497322 - crm #1896100 port epoll_wait fix from RHSA-2008-0665 to RHEL 5

498653 - fault in iget() - suspected race between nfs_access_cache_shrinker() and umount - Ref.: Bug #433249

499546 - kernel: proc: avoid information leaks to non-privileged processes [rhel-5.3.z]

499783 - kernel: random: make get_random_int() more random [rhel-5.3.z]

500120 - Problem with drive status leds after update to 2.6.18-128.el5

500297 - CVE-2009-1630 kernel: nfs: fix NFS v4 client handling of MAY_EXEC in nfs_permission

500349 - RHEL5.3.z LTP nanosleep02 Test Case Failure on Fujitsu Machine

500945 - CVE-2009-1758 kernel: xen: local denial of service

501742 - GFS2: gfs2_quotad in uninterruptible sleep while idle

501751 - kernel should be built with -fwrapv [rhel-5.3.z]

502837 - BCM5704 NIC results in CPU 100%SI , sluggish system performance

502916 - kernel BUG at drivers/scsi/libiscsi.c:301!

 

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-2.6.18-128.1.14.el5.src.rpm

 

i386:

kernel-2.6.18-128.1.14.el5.i686.rpm

kernel-PAE-2.6.18-128.1.14.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-128.1.14.el5.i686.rpm

kernel-PAE-devel-2.6.18-128.1.14.el5.i686.rpm

kernel-debug-2.6.18-128.1.14.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-128.1.14.el5.i686.rpm

kernel-debug-devel-2.6.18-128.1.14.el5.i686.rpm

kernel-debuginfo-2.6.18-128.1.14.el5.i686.rpm

kernel-debuginfo-common-2.6.18-128.1.14.el5.i686.rpm

kernel-devel-2.6.18-128.1.14.el5.i686.rpm

kernel-headers-2.6.18-128.1.14.el5.i386.rpm

kernel-xen-2.6.18-128.1.14.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-128.1.14.el5.i686.rpm

kernel-xen-devel-2.6.18-128.1.14.el5.i686.rpm

 

noarch:

kernel-doc-2.6.18-128.1.14.el5.noarch.rpm

 

x86_64:

kernel-2.6.18-128.1.14.el5.x86_64.rpm

kernel-debug-2.6.18-128.1.14.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-128.1.14.el5.x86_64.rpm

kernel-debug-devel-2.6.18-128.1.14.el5.x86_64.rpm

kernel-debuginfo-2.6.18-128.1.14.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-128.1.14.el5.x86_64.rpm

kernel-devel-2.6.18-128.1.14.el5.x86_64.rpm

kernel-headers-2.6.18-128.1.14.el5.x86_64.rpm

kernel-xen-2.6.18-128.1.14.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-128.1.14.el5.x86_64.rpm

kernel-xen-devel-2.6.18-128.1.14.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-2.6.18-128.1.14.el5.src.rpm

 

i386:

kernel-2.6.18-128.1.14.el5.i686.rpm

kernel-PAE-2.6.18-128.1.14.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-128.1.14.el5.i686.rpm

kernel-PAE-devel-2.6.18-128.1.14.el5.i686.rpm

kernel-debug-2.6.18-128.1.14.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-128.1.14.el5.i686.rpm

kernel-debug-devel-2.6.18-128.1.14.el5.i686.rpm

kernel-debuginfo-2.6.18-128.1.14.el5.i686.rpm

kernel-debuginfo-common-2.6.18-128.1.14.el5.i686.rpm

kernel-devel-2.6.18-128.1.14.el5.i686.rpm

kernel-headers-2.6.18-128.1.14.el5.i386.rpm

kernel-xen-2.6.18-128.1.14.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-128.1.14.el5.i686.rpm

kernel-xen-devel-2.6.18-128.1.14.el5.i686.rpm

 

ia64:

kernel-2.6.18-128.1.14.el5.ia64.rpm

kernel-debug-2.6.18-128.1.14.el5.ia64.rpm

kernel-debug-debuginfo-2.6.18-128.1.14.el5.ia64.rpm

kernel-debug-devel-2.6.18-128.1.14.el5.ia64.rpm

kernel-debuginfo-2.6.18-128.1.14.el5.ia64.rpm

kernel-debuginfo-common-2.6.18-128.1.14.el5.ia64.rpm

kernel-devel-2.6.18-128.1.14.el5.ia64.rpm

kernel-headers-2.6.18-128.1.14.el5.ia64.rpm

kernel-xen-2.6.18-128.1.14.el5.ia64.rpm

kernel-xen-debuginfo-2.6.18-128.1.14.el5.ia64.rpm

kernel-xen-devel-2.6.18-128.1.14.el5.ia64.rpm

 

noarch:

kernel-doc-2.6.18-128.1.14.el5.noarch.rpm

 

ppc:

kernel-2.6.18-128.1.14.el5.ppc64.rpm

kernel-debug-2.6.18-128.1.14.el5.ppc64.rpm

kernel-debug-debuginfo-2.6.18-128.1.14.el5.ppc64.rpm

kernel-debug-devel-2.6.18-128.1.14.el5.ppc64.rpm

kernel-debuginfo-2.6.18-128.1.14.el5.ppc64.rpm

kernel-debuginfo-common-2.6.18-128.1.14.el5.ppc64.rpm

kernel-devel-2.6.18-128.1.14.el5.ppc64.rpm

kernel-headers-2.6.18-128.1.14.el5.ppc.rpm

kernel-headers-2.6.18-128.1.14.el5.ppc64.rpm

kernel-kdump-2.6.18-128.1.14.el5.ppc64.rpm

kernel-kdump-debuginfo-2.6.18-128.1.14.el5.ppc64.rpm

kernel-kdump-devel-2.6.18-128.1.14.el5.ppc64.rpm

 

s390x:

kernel-2.6.18-128.1.14.el5.s390x.rpm

kernel-debug-2.6.18-128.1.14.el5.s390x.rpm

kernel-debug-debuginfo-2.6.18-128.1.14.el5.s390x.rpm

kernel-debug-devel-2.6.18-128.1.14.el5.s390x.rpm

kernel-debuginfo-2.6.18-128.1.14.el5.s390x.rpm

kernel-debuginfo-common-2.6.18-128.1.14.el5.s390x.rpm

kernel-devel-2.6.18-128.1.14.el5.s390x.rpm

kernel-headers-2.6.18-128.1.14.el5.s390x.rpm

kernel-kdump-2.6.18-128.1.14.el5.s390x.rpm

kernel-kdump-debuginfo-2.6.18-128.1.14.el5.s390x.rpm

kernel-kdump-devel-2.6.18-128.1.14.el5.s390x.rpm

 

x86_64:

kernel-2.6.18-128.1.14.el5.x86_64.rpm

kernel-debug-2.6.18-128.1.14.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-128.1.14.el5.x86_64.rpm

kernel-debug-devel-2.6.18-128.1.14.el5.x86_64.rpm

kernel-debuginfo-2.6.18-128.1.14.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-128.1.14.el5.x86_64.rpm

kernel-devel-2.6.18-128.1.14.el5.x86_64.rpm

kernel-headers-2.6.18-128.1.14.el5.x86_64.rpm

kernel-xen-2.6.18-128.1.14.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-128.1.14.el5.x86_64.rpm

kernel-xen-devel-2.6.18-128.1.14.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-2009-1072

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1192

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1439

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1630

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1633

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1758

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 2009 Red Hat, Inc.

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