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[RHSA-2010:0046-01] 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-2010:0046-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0046.html

Issue date: 2010-01-19

CVE Names: CVE-2006-6304 CVE-2009-2910 CVE-2009-3080

CVE-2009-3556 CVE-2009-3889 CVE-2009-3939

CVE-2009-4020 CVE-2009-4021 CVE-2009-4138

CVE-2009-4141 CVE-2009-4272

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

 

1. Summary:

 

Updated kernel packages that fix multiple 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 (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64

 

3. Description:

 

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

operating system.

 

Security fixes:

 

* an array index error was found in the gdth driver. A local user could

send a specially-crafted IOCTL request that would cause a denial of service

or, possibly, privilege escalation. (CVE-2009-3080, Important)

 

* a flaw was found in the FUSE implementation. When a system is low on

memory, fuse_put_request() could dereference an invalid pointer, possibly

leading to a local denial of service or privilege escalation.

(CVE-2009-4021, Important)

 

* Tavis Ormandy discovered a deficiency in the fasync_helper()

implementation. This could allow a local, unprivileged user to leverage a

use-after-free of locked, asynchronous file descriptors to cause a denial

of service or privilege escalation. (CVE-2009-4141, Important)

 

* the Parallels Virtuozzo Containers team reported the RHSA-2009:1243

update introduced two flaws in the routing implementation. If an attacker

was able to cause a large enough number of collisions in the routing hash

table (via specially-crafted packets) for the emergency route flush to

trigger, a deadlock could occur. Secondly, if the kernel routing cache was

disabled, an uninitialized pointer would be left behind after a route

lookup, leading to a kernel panic. (CVE-2009-4272, Important)

 

* the RHSA-2009:0225 update introduced a rewrite attack flaw in the

do_coredump() function. A local attacker able to guess the file name a

process is going to dump its core to, prior to the process crashing, could

use this flaw to append data to the dumped core file. This issue only

affects systems that have "/proc/sys/fs/suid_dumpable" set to 2 (the

default value is 0). (CVE-2006-6304, Moderate)

 

The fix for CVE-2006-6304 changes the expected behavior: With suid_dumpable

set to 2, the core file will not be recorded if the file already exists.

For example, core files will not be overwritten on subsequent crashes of

processes whose core files map to the same name.

 

* an information leak was found in the Linux kernel. On AMD64 systems,

32-bit processes could access and read certain 64-bit registers by

temporarily switching themselves to 64-bit mode. (CVE-2009-2910, Moderate)

 

* the RHBA-2008:0314 update introduced N_Port ID Virtualization (NPIV)

support in the qla2xxx driver, resulting in two new sysfs pseudo files,

"/sys/class/scsi_host/[a qla2xxx host]/vport_create" and "vport_delete".

These two files were world-writable by default, allowing a local user to

change SCSI host attributes. This flaw only affects systems using the

qla2xxx driver and NPIV capable hardware. (CVE-2009-3556, Moderate)

 

* permission issues were found in the megaraid_sas driver. The "dbg_lvl"

and "poll_mode_io" files on the sysfs file system ("/sys/") had

world-writable permissions. This could allow local, unprivileged users to

change the behavior of the driver. (CVE-2009-3889, CVE-2009-3939, Moderate)

 

* a NULL pointer dereference flaw was found in the firewire-ohci driver

used for OHCI compliant IEEE 1394 controllers. A local, unprivileged user

with access to /dev/fw* files could issue certain IOCTL calls, causing a

denial of service or privilege escalation. The FireWire modules are

blacklisted by default, and if enabled, only root has access to the files

noted above by default. (CVE-2009-4138, Moderate)

 

* a buffer overflow flaw was found in the hfs_bnode_read() function in the

HFS file system implementation. This could lead to a denial of service if a

user browsed a specially-crafted HFS file system, for example, by running

"ls". (CVE-2009-4020, Low)

 

Bug fix documentation for this update will be available shortly from

www.redhat.com/docs/en-US/errata/RHSA-2010-0046/Kernel_Security_Update/

index.html

 

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/):

 

526068 - CVE-2009-3889 CVE-2009-3939 kernel: megaraid_sas permissions in sysfs

526788 - CVE-2009-2910 kernel: x86_64 32 bit process register leak

537027 - Timedrift on VM with pv_clock enabled, causing system hangs and sporadic time behaviour [rhel-5.4.z]

537177 - CVE-2009-3556 kernel: qla2xxx NPIV vport management pseudofiles are world writable

537273 - CVE-2006-6304 kernel: use flag in do_coredump()

538734 - CVE-2009-4021 kernel: fuse: prevent fuse_put_request on invalid pointer

539414 - CVE-2009-3080 kernel: gdth: Prevent negative offsets in ioctl

539686 - bnx2: panic in bnx2_poll_work() [rhel-5.4.z]

540736 - CVE-2009-4020 kernel: hfs buffer overflow

540896 - PV clock fix throws off database application time [rhel-5.4.z]

542582 - kdump corefile cannot be backtraced in IA64 [rhel-5.4.z]

543448 - Using IPoIB, losing connectivity with 1 host, other hosts accessible [rhel-5.4.z]

544978 - glock_workqueue -- glock ref count via gfs2_glock_hold [rhel-5.4.z]

545411 - CVE-2009-4272 kernel: emergency route cache flushing leads to node deadlock

547236 - CVE-2009-4138 kernel: firewire: ohci: handle receive packets with a data length of zero

547521 - CRM#1971672, Data loss in GFS2 when multiple nodes writes to same file [rhel-5.4.z]

547530 - kernel: BUG: soft lockup - CPU#1 stuck for 13s! [httpd:4490] [rhel-5.4.z]

547906 - CVE-2009-4141 kernel: create_elf_tables can leave urandom in a bad state

548370 - kernel: sleeping vfs_check_frozen in called in atomic context from do_wp_page [rhel-5.4.z]

549905 - hvm, x86_64 guest panic on 2.6.18-164.9.1.el5 [rhel-5.4.z]

549906 - [NetApp 5.4.z bug] Emulex FC ports on RHEL 5.4 GA offlined during target controller faults [rhel-5.4.z]

549907 - Hang when echoing to /proc/sys/net/ipv4/route/secret_interval [rhel-5.4.z]

549908 - resize2fs online resize hangs [rhel-5.4.z]

550968 - RHEL5.4 guest with PV clock: inconsistent times returned by clock_gettime(CLOCK_REALTIME) and gettimeofday() [rhel-5.4.z]

 

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-2.6.18-164.11.1.el5.src.rpm

 

i386:

kernel-2.6.18-164.11.1.el5.i686.rpm

kernel-PAE-2.6.18-164.11.1.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-164.11.1.el5.i686.rpm

kernel-PAE-devel-2.6.18-164.11.1.el5.i686.rpm

kernel-debug-2.6.18-164.11.1.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-164.11.1.el5.i686.rpm

kernel-debug-devel-2.6.18-164.11.1.el5.i686.rpm

kernel-debuginfo-2.6.18-164.11.1.el5.i686.rpm

kernel-debuginfo-common-2.6.18-164.11.1.el5.i686.rpm

kernel-devel-2.6.18-164.11.1.el5.i686.rpm

kernel-headers-2.6.18-164.11.1.el5.i386.rpm

kernel-xen-2.6.18-164.11.1.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-164.11.1.el5.i686.rpm

kernel-xen-devel-2.6.18-164.11.1.el5.i686.rpm

 

noarch:

kernel-doc-2.6.18-164.11.1.el5.noarch.rpm

 

x86_64:

kernel-2.6.18-164.11.1.el5.x86_64.rpm

kernel-debug-2.6.18-164.11.1.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-164.11.1.el5.x86_64.rpm

kernel-debug-devel-2.6.18-164.11.1.el5.x86_64.rpm

kernel-debuginfo-2.6.18-164.11.1.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-164.11.1.el5.x86_64.rpm

kernel-devel-2.6.18-164.11.1.el5.x86_64.rpm

kernel-headers-2.6.18-164.11.1.el5.x86_64.rpm

kernel-xen-2.6.18-164.11.1.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-164.11.1.el5.x86_64.rpm

kernel-xen-devel-2.6.18-164.11.1.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-2.6.18-164.11.1.el5.src.rpm

 

i386:

kernel-2.6.18-164.11.1.el5.i686.rpm

kernel-PAE-2.6.18-164.11.1.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-164.11.1.el5.i686.rpm

kernel-PAE-devel-2.6.18-164.11.1.el5.i686.rpm

kernel-debug-2.6.18-164.11.1.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-164.11.1.el5.i686.rpm

kernel-debug-devel-2.6.18-164.11.1.el5.i686.rpm

kernel-debuginfo-2.6.18-164.11.1.el5.i686.rpm

kernel-debuginfo-common-2.6.18-164.11.1.el5.i686.rpm

kernel-devel-2.6.18-164.11.1.el5.i686.rpm

kernel-headers-2.6.18-164.11.1.el5.i386.rpm

kernel-xen-2.6.18-164.11.1.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-164.11.1.el5.i686.rpm

kernel-xen-devel-2.6.18-164.11.1.el5.i686.rpm

 

ia64:

kernel-2.6.18-164.11.1.el5.ia64.rpm

kernel-debug-2.6.18-164.11.1.el5.ia64.rpm

kernel-debug-debuginfo-2.6.18-164.11.1.el5.ia64.rpm

kernel-debug-devel-2.6.18-164.11.1.el5.ia64.rpm

kernel-debuginfo-2.6.18-164.11.1.el5.ia64.rpm

kernel-debuginfo-common-2.6.18-164.11.1.el5.ia64.rpm

kernel-devel-2.6.18-164.11.1.el5.ia64.rpm

kernel-headers-2.6.18-164.11.1.el5.ia64.rpm

kernel-xen-2.6.18-164.11.1.el5.ia64.rpm

kernel-xen-debuginfo-2.6.18-164.11.1.el5.ia64.rpm

kernel-xen-devel-2.6.18-164.11.1.el5.ia64.rpm

 

noarch:

kernel-doc-2.6.18-164.11.1.el5.noarch.rpm

 

ppc:

kernel-2.6.18-164.11.1.el5.ppc64.rpm

kernel-debug-2.6.18-164.11.1.el5.ppc64.rpm

kernel-debug-debuginfo-2.6.18-164.11.1.el5.ppc64.rpm

kernel-debug-devel-2.6.18-164.11.1.el5.ppc64.rpm

kernel-debuginfo-2.6.18-164.11.1.el5.ppc64.rpm

kernel-debuginfo-common-2.6.18-164.11.1.el5.ppc64.rpm

kernel-devel-2.6.18-164.11.1.el5.ppc64.rpm

kernel-headers-2.6.18-164.11.1.el5.ppc.rpm

kernel-headers-2.6.18-164.11.1.el5.ppc64.rpm

kernel-kdump-2.6.18-164.11.1.el5.ppc64.rpm

kernel-kdump-debuginfo-2.6.18-164.11.1.el5.ppc64.rpm

kernel-kdump-devel-2.6.18-164.11.1.el5.ppc64.rpm

 

s390x:

kernel-2.6.18-164.11.1.el5.s390x.rpm

kernel-debug-2.6.18-164.11.1.el5.s390x.rpm

kernel-debug-debuginfo-2.6.18-164.11.1.el5.s390x.rpm

kernel-debug-devel-2.6.18-164.11.1.el5.s390x.rpm

kernel-debuginfo-2.6.18-164.11.1.el5.s390x.rpm

kernel-debuginfo-common-2.6.18-164.11.1.el5.s390x.rpm

kernel-devel-2.6.18-164.11.1.el5.s390x.rpm

kernel-headers-2.6.18-164.11.1.el5.s390x.rpm

kernel-kdump-2.6.18-164.11.1.el5.s390x.rpm

kernel-kdump-debuginfo-2.6.18-164.11.1.el5.s390x.rpm

kernel-kdump-devel-2.6.18-164.11.1.el5.s390x.rpm

 

x86_64:

kernel-2.6.18-164.11.1.el5.x86_64.rpm

kernel-debug-2.6.18-164.11.1.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-164.11.1.el5.x86_64.rpm

kernel-debug-devel-2.6.18-164.11.1.el5.x86_64.rpm

kernel-debuginfo-2.6.18-164.11.1.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-164.11.1.el5.x86_64.rpm

kernel-devel-2.6.18-164.11.1.el5.x86_64.rpm

kernel-headers-2.6.18-164.11.1.el5.x86_64.rpm

kernel-xen-2.6.18-164.11.1.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-164.11.1.el5.x86_64.rpm

kernel-xen-devel-2.6.18-164.11.1.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:

 

https://www.redhat.com/security/data/cve/CVE-2006-6304.html

https://www.redhat.com/security/data/cve/CVE-2009-2910.html

https://www.redhat.com/security/data/cve/CVE-2009-3080.html

https://www.redhat.com/security/data/cve/CVE-2009-3556.html

https://www.redhat.com/security/data/cve/CVE-2009-3889.html

https://www.redhat.com/security/data/cve/CVE-2009-3939.html

https://www.redhat.com/security/data/cve/CVE-2009-4020.html

https://www.redhat.com/security/data/cve/CVE-2009-4021.html

https://www.redhat.com/security/data/cve/CVE-2009-4138.html

https://www.redhat.com/security/data/cve/CVE-2009-4141.html

https://www.redhat.com/security/data/cve/CVE-2009-4272.html

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

http://kbase.redhat.com/faq/docs/DOC-20536

 

8. Contact:

 

The Red Hat security contact is . More contact

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

 

Copyright 2010 Red Hat, Inc.

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