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

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2010:0380-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2010:0380.html
Issue date:        2010-04-27
CVE Names:         CVE-2009-4027 CVE-2009-4307 CVE-2010-0727 
                   CVE-2010-1188 
====================================================================
1. Summary:

Updated kernel packages that fix multiple security issues and several bugs
are now available for Red Hat Enterprise Linux 5.4 Extended Update Support.

The Red Hat Security Response Team has rated this update as having
important security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux (v. 5.4.z 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:

* a race condition was found in the mac80211 implementation, a framework
used for writing drivers for wireless devices. An attacker could trigger
this flaw by sending a Delete Block ACK (DELBA) packet to a target system,
resulting in a remote denial of service. Note: This issue only affected
users on 802.11n networks, and that also use the iwlagn driver with Intel
wireless hardware. (CVE-2009-4027, Important)

* a use-after-free flaw was found in the tcp_rcv_state_process() function
in the Linux kernel TCP/IP protocol suite implementation. If a system using
IPv6 had the IPV6_RECVPKTINFO option set on a listening socket, a remote
attacker could send an IPv6 packet to that system, causing a kernel panic
(denial of service). (CVE-2010-1188, Important)

* a flaw was found in the gfs2_lock() implementation. The GFS2 locking code
could skip the lock operation for files that have the S_ISGID bit
(set-group-ID on execution) in their mode set. A local, unprivileged user
on a system that has a GFS2 file system mounted could use this flaw to
cause a kernel panic (denial of service). (CVE-2010-0727, Moderate)

* a divide-by-zero flaw was found in the ext4 file system code. A local
attacker could use this flaw to cause a denial of service by mounting a
specially-crafted ext4 file system. (CVE-2009-4307, Low)

Bug fixes:

* if a program that calls posix_fadvise() were compiled on x86, and then
run on a 64-bit system, that program could experience various problems,
including performance issues and the call to posix_fadvise() failing,
causing the program to not run as expected or even abort. With this update,
when such programs attempt to call posix_fadvise() on 64-bit systems,
sys32_fadvise64() is called instead, which resolves this issue. This update
also fixes other 32-bit system calls that were mistakenly called on 64-bit
systems (including systems running the kernel-xen kernel). (BZ#569597)

* on some systems able to set a P-State limit via the BIOS, it was not
possible to set the limit to a higher frequency if the system was rebooted
while a low limit was set:
"/sys/devices/system/cpu/cpu[x]/cpufreq/scaling_max_freq" would retain the
low limit in these situations. With this update, limits are correctly set,
even after being changed after a system reboot. (BZ#569727)

* certain Intel ICH hardware (using the e1000e driver) has an NFS filtering
capability that did not work as expected, causing memory corruption, which
could lead to kernel panics, or other unexpected behavior. In a reported
case, a panic occurred when running NFS connection tests. This update
resolves this issue by disabling the filtering capability. (BZ#569797)

* if "open(/proc/[PID]/[xxxx])" was called at the same time the process was
exiting, the call would fail with an EINVAL error (an incorrect error for
this situation). With this update, the correct error, ENOENT, is returned
in this situation. (BZ#571362)

* multiqueue is used for transmitting data, but a single queue transmit
ON/OFF scheme was used. This led to a race condition on systems with the
bnx2x driver in situations where one queue became full, but not stopped,
and the other queue enabled transmission. With this update, only a single
queue is used. (BZ#576951)

* the "/proc/sys/vm/mmap_min_addr" tunable helps prevent unprivileged
users from creating new memory mappings below the minimum address. The
sysctl value for mmap_min_addr could be changed by a process or user that
has an effective user ID (euid) of 0, even if the process or user does not
have the CAP_SYS_RAWIO capability. This update adds a capability check for
the CAP_SYS_RAWIO capability before allowing the mmap_min_addr value to be
changed. (BZ#577206)

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 all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at

To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.

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

541149 - CVE-2009-4026 CVE-2009-4027 kernel: mac80211: fix spurious delBA handling
547251 - CVE-2009-4307 kernel: ext4: avoid divide by zero when trying to mount a corrupted file system
569597 - posix_fadvise() handles its arguments incorrectly in 32-bit compat mode. [rhel-5.4.z]
569727 - when booted with P-state limit, limit can never be increased [rhel-5.4.z]
569797 - e1000 & e1000e: Memory corruption/paging error when tx hang occurs [rhel-5.4.z]
570863 - CVE-2010-0727 bug in GFS/GFS2 locking code leads to dos
571362 - [5.4] open(/proc/PID/xxx) fails with EINVAL even though it should be ENOENT. [rhel-5.4.z]
576951 - [Broadcom 5.4.z bug] bnx2x: net device is in XON state while the Tx ring is full [rhel-5.4.z]
577206 - kernel: sysctl: require CAP_SYS_RAWIO to set mmap_min_addr [rhel-5.4.z]
577711 - CVE-2010-1188 kernel: ipv6: skb is unexpectedly freed

6. Package List:

Red Hat Enterprise Linux (v. 5.4.z server):

Source:
kernel-2.6.18-164.17.1.el5.src.rpm

i386:
kernel-2.6.18-164.17.1.el5.i686.rpm
kernel-PAE-2.6.18-164.17.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-164.17.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-164.17.1.el5.i686.rpm
kernel-debug-2.6.18-164.17.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-164.17.1.el5.i686.rpm
kernel-debug-devel-2.6.18-164.17.1.el5.i686.rpm
kernel-debuginfo-2.6.18-164.17.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-164.17.1.el5.i686.rpm
kernel-devel-2.6.18-164.17.1.el5.i686.rpm
kernel-headers-2.6.18-164.17.1.el5.i386.rpm
kernel-xen-2.6.18-164.17.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-164.17.1.el5.i686.rpm
kernel-xen-devel-2.6.18-164.17.1.el5.i686.rpm

ia64:
kernel-2.6.18-164.17.1.el5.ia64.rpm
kernel-debug-2.6.18-164.17.1.el5.ia64.rpm
kernel-debug-debuginfo-2.6.18-164.17.1.el5.ia64.rpm
kernel-debug-devel-2.6.18-164.17.1.el5.ia64.rpm
kernel-debuginfo-2.6.18-164.17.1.el5.ia64.rpm
kernel-debuginfo-common-2.6.18-164.17.1.el5.ia64.rpm
kernel-devel-2.6.18-164.17.1.el5.ia64.rpm
kernel-headers-2.6.18-164.17.1.el5.ia64.rpm
kernel-xen-2.6.18-164.17.1.el5.ia64.rpm
kernel-xen-debuginfo-2.6.18-164.17.1.el5.ia64.rpm
kernel-xen-devel-2.6.18-164.17.1.el5.ia64.rpm

noarch:
kernel-doc-2.6.18-164.17.1.el5.noarch.rpm

ppc:
kernel-2.6.18-164.17.1.el5.ppc64.rpm
kernel-debug-2.6.18-164.17.1.el5.ppc64.rpm
kernel-debug-debuginfo-2.6.18-164.17.1.el5.ppc64.rpm
kernel-debug-devel-2.6.18-164.17.1.el5.ppc64.rpm
kernel-debuginfo-2.6.18-164.17.1.el5.ppc64.rpm
kernel-debuginfo-common-2.6.18-164.17.1.el5.ppc64.rpm
kernel-devel-2.6.18-164.17.1.el5.ppc64.rpm
kernel-headers-2.6.18-164.17.1.el5.ppc.rpm
kernel-headers-2.6.18-164.17.1.el5.ppc64.rpm
kernel-kdump-2.6.18-164.17.1.el5.ppc64.rpm
kernel-kdump-debuginfo-2.6.18-164.17.1.el5.ppc64.rpm
kernel-kdump-devel-2.6.18-164.17.1.el5.ppc64.rpm

s390x:
kernel-2.6.18-164.17.1.el5.s390x.rpm
kernel-debug-2.6.18-164.17.1.el5.s390x.rpm
kernel-debug-debuginfo-2.6.18-164.17.1.el5.s390x.rpm
kernel-debug-devel-2.6.18-164.17.1.el5.s390x.rpm
kernel-debuginfo-2.6.18-164.17.1.el5.s390x.rpm
kernel-debuginfo-common-2.6.18-164.17.1.el5.s390x.rpm
kernel-devel-2.6.18-164.17.1.el5.s390x.rpm
kernel-headers-2.6.18-164.17.1.el5.s390x.rpm
kernel-kdump-2.6.18-164.17.1.el5.s390x.rpm
kernel-kdump-debuginfo-2.6.18-164.17.1.el5.s390x.rpm
kernel-kdump-devel-2.6.18-164.17.1.el5.s390x.rpm

x86_64:
kernel-2.6.18-164.17.1.el5.x86_64.rpm
kernel-debug-2.6.18-164.17.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-164.17.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-164.17.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-164.17.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-164.17.1.el5.x86_64.rpm
kernel-devel-2.6.18-164.17.1.el5.x86_64.rpm
kernel-headers-2.6.18-164.17.1.el5.x86_64.rpm
kernel-xen-2.6.18-164.17.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-164.17.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-164.17.1.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-2009-4027.html
https://www.redhat.com/security/data/cve/CVE-2009-4307.html
https://www.redhat.com/security/data/cve/CVE-2010-0727.html
https://www.redhat.com/security/data/cve/CVE-2010-1188.html
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 2010 Red Hat, Inc.

Red Hat: 2010:0380-01: kernel: Important Advisory

Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 5.4 Extended Update Support

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security fixes:
* a race condition was found in the mac80211 implementation, a framework used for writing drivers for wireless devices. An attacker could trigger this flaw by sending a Delete Block ACK (DELBA) packet to a target system, resulting in a remote denial of service. Note: This issue only affected users on 802.11n networks, and that also use the iwlagn driver with Intel wireless hardware. (CVE-2009-4027, Important)
* a use-after-free flaw was found in the tcp_rcv_state_process() function in the Linux kernel TCP/IP protocol suite implementation. If a system using IPv6 had the IPV6_RECVPKTINFO option set on a listening socket, a remote attacker could send an IPv6 packet to that system, causing a kernel panic (denial of service). (CVE-2010-1188, Important)
* a flaw was found in the gfs2_lock() implementation. The GFS2 locking code could skip the lock operation for files that have the S_ISGID bit (set-group-ID on execution) in their mode set. A local, unprivileged user on a system that has a GFS2 file system mounted could use this flaw to cause a kernel panic (denial of service). (CVE-2010-0727, Moderate)
* a divide-by-zero flaw was found in the ext4 file system code. A local attacker could use this flaw to cause a denial of service by mounting a specially-crafted ext4 file system. (CVE-2009-4307, Low)
Bug fixes:
* if a program that calls posix_fadvise() were compiled on x86, and then run on a 64-bit system, that program could experience various problems, including performance issues and the call to posix_fadvise() failing, causing the program to not run as expected or even abort. With this update, when such programs attempt to call posix_fadvise() on 64-bit systems, sys32_fadvise64() is called instead, which resolves this issue. This update also fixes other 32-bit system calls that were mistakenly called on 64-bit systems (including systems running the kernel-xen kernel). (BZ#569597)
* on some systems able to set a P-State limit via the BIOS, it was not possible to set the limit to a higher frequency if the system was rebooted while a low limit was set: "/sys/devices/system/cpu/cpu[x]/cpufreq/scaling_max_freq" would retain the low limit in these situations. With this update, limits are correctly set, even after being changed after a system reboot. (BZ#569727)
* certain Intel ICH hardware (using the e1000e driver) has an NFS filtering capability that did not work as expected, causing memory corruption, which could lead to kernel panics, or other unexpected behavior. In a reported case, a panic occurred when running NFS connection tests. This update resolves this issue by disabling the filtering capability. (BZ#569797)
* if "open(/proc/[PID]/[xxxx])" was called at the same time the process was exiting, the call would fail with an EINVAL error (an incorrect error for this situation). With this update, the correct error, ENOENT, is returned in this situation. (BZ#571362)
* multiqueue is used for transmitting data, but a single queue transmit ON/OFF scheme was used. This led to a race condition on systems with the bnx2x driver in situations where one queue became full, but not stopped, and the other queue enabled transmission. With this update, only a single queue is used. (BZ#576951)
* the "/proc/sys/vm/mmap_min_addr" tunable helps prevent unprivileged users from creating new memory mappings below the minimum address. The sysctl value for mmap_min_addr could be changed by a process or user that has an effective user ID (euid) of 0, even if the process or user does not have the CAP_SYS_RAWIO capability. This update adds a capability check for the CAP_SYS_RAWIO capability before allowing the mmap_min_addr value to be changed. (BZ#577206)
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.



Summary


Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at
To install kernel packages manually, use "rpm -ivh [package]". Do not use "rpm -Uvh" as that will remove the running kernel binaries from your system. You may use "rpm -e" to remove old kernels after determining that the new kernel functions properly on your system.

References

https://www.redhat.com/security/data/cve/CVE-2009-4027.html https://www.redhat.com/security/data/cve/CVE-2009-4307.html https://www.redhat.com/security/data/cve/CVE-2010-0727.html https://www.redhat.com/security/data/cve/CVE-2010-1188.html http://www.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux (v. 5.4.z server):
Source: kernel-2.6.18-164.17.1.el5.src.rpm
i386: kernel-2.6.18-164.17.1.el5.i686.rpm kernel-PAE-2.6.18-164.17.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-164.17.1.el5.i686.rpm kernel-PAE-devel-2.6.18-164.17.1.el5.i686.rpm kernel-debug-2.6.18-164.17.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-164.17.1.el5.i686.rpm kernel-debug-devel-2.6.18-164.17.1.el5.i686.rpm kernel-debuginfo-2.6.18-164.17.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-164.17.1.el5.i686.rpm kernel-devel-2.6.18-164.17.1.el5.i686.rpm kernel-headers-2.6.18-164.17.1.el5.i386.rpm kernel-xen-2.6.18-164.17.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-164.17.1.el5.i686.rpm kernel-xen-devel-2.6.18-164.17.1.el5.i686.rpm
ia64: kernel-2.6.18-164.17.1.el5.ia64.rpm kernel-debug-2.6.18-164.17.1.el5.ia64.rpm kernel-debug-debuginfo-2.6.18-164.17.1.el5.ia64.rpm kernel-debug-devel-2.6.18-164.17.1.el5.ia64.rpm kernel-debuginfo-2.6.18-164.17.1.el5.ia64.rpm kernel-debuginfo-common-2.6.18-164.17.1.el5.ia64.rpm kernel-devel-2.6.18-164.17.1.el5.ia64.rpm kernel-headers-2.6.18-164.17.1.el5.ia64.rpm kernel-xen-2.6.18-164.17.1.el5.ia64.rpm kernel-xen-debuginfo-2.6.18-164.17.1.el5.ia64.rpm kernel-xen-devel-2.6.18-164.17.1.el5.ia64.rpm
noarch: kernel-doc-2.6.18-164.17.1.el5.noarch.rpm
ppc: kernel-2.6.18-164.17.1.el5.ppc64.rpm kernel-debug-2.6.18-164.17.1.el5.ppc64.rpm kernel-debug-debuginfo-2.6.18-164.17.1.el5.ppc64.rpm kernel-debug-devel-2.6.18-164.17.1.el5.ppc64.rpm kernel-debuginfo-2.6.18-164.17.1.el5.ppc64.rpm kernel-debuginfo-common-2.6.18-164.17.1.el5.ppc64.rpm kernel-devel-2.6.18-164.17.1.el5.ppc64.rpm kernel-headers-2.6.18-164.17.1.el5.ppc.rpm kernel-headers-2.6.18-164.17.1.el5.ppc64.rpm kernel-kdump-2.6.18-164.17.1.el5.ppc64.rpm kernel-kdump-debuginfo-2.6.18-164.17.1.el5.ppc64.rpm kernel-kdump-devel-2.6.18-164.17.1.el5.ppc64.rpm
s390x: kernel-2.6.18-164.17.1.el5.s390x.rpm kernel-debug-2.6.18-164.17.1.el5.s390x.rpm kernel-debug-debuginfo-2.6.18-164.17.1.el5.s390x.rpm kernel-debug-devel-2.6.18-164.17.1.el5.s390x.rpm kernel-debuginfo-2.6.18-164.17.1.el5.s390x.rpm kernel-debuginfo-common-2.6.18-164.17.1.el5.s390x.rpm kernel-devel-2.6.18-164.17.1.el5.s390x.rpm kernel-headers-2.6.18-164.17.1.el5.s390x.rpm kernel-kdump-2.6.18-164.17.1.el5.s390x.rpm kernel-kdump-debuginfo-2.6.18-164.17.1.el5.s390x.rpm kernel-kdump-devel-2.6.18-164.17.1.el5.s390x.rpm
x86_64: kernel-2.6.18-164.17.1.el5.x86_64.rpm kernel-debug-2.6.18-164.17.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-164.17.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-164.17.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-164.17.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-164.17.1.el5.x86_64.rpm kernel-devel-2.6.18-164.17.1.el5.x86_64.rpm kernel-headers-2.6.18-164.17.1.el5.x86_64.rpm kernel-xen-2.6.18-164.17.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-164.17.1.el5.x86_64.rpm kernel-xen-devel-2.6.18-164.17.1.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


Severity
Advisory ID: RHSA-2010:0380-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2010:0380.html
Issued Date: : 2010-04-27
CVE Names: CVE-2009-4027 CVE-2009-4307 CVE-2010-0727 CVE-2010-1188

Topic

Updated kernel packages that fix multiple security issues and several bugsare now available for Red Hat Enterprise Linux 5.4 Extended Update Support.The Red Hat Security Response Team has rated this update as havingimportant security impact. Common Vulnerability Scoring System (CVSS) basescores, which give detailed severity ratings, are available for eachvulnerability from the CVE links in the References section.


Topic


 

Relevant Releases Architectures

Red Hat Enterprise Linux (v. 5.4.z server) - i386, ia64, noarch, ppc, s390x, x86_64


Bugs Fixed

541149 - CVE-2009-4026 CVE-2009-4027 kernel: mac80211: fix spurious delBA handling

547251 - CVE-2009-4307 kernel: ext4: avoid divide by zero when trying to mount a corrupted file system

569597 - posix_fadvise() handles its arguments incorrectly in 32-bit compat mode. [rhel-5.4.z]

569727 - when booted with P-state limit, limit can never be increased [rhel-5.4.z]

569797 - e1000 & e1000e: Memory corruption/paging error when tx hang occurs [rhel-5.4.z]

570863 - CVE-2010-0727 bug in GFS/GFS2 locking code leads to dos

571362 - [5.4] open(/proc/PID/xxx) fails with EINVAL even though it should be ENOENT. [rhel-5.4.z]

576951 - [Broadcom 5.4.z bug] bnx2x: net device is in XON state while the Tx ring is full [rhel-5.4.z]

577206 - kernel: sysctl: require CAP_SYS_RAWIO to set mmap_min_addr [rhel-5.4.z]

577711 - CVE-2010-1188 kernel: ipv6: skb is unexpectedly freed


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