Red Hat: 2015:0695-01: kernel: Important Advisory | LinuxSecurity.com
=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2015:0695-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2015-0695.html
Issue date:        2015-03-17
CVE Names:         CVE-2013-2596 CVE-2014-5471 CVE-2014-5472 
                   CVE-2014-7841 CVE-2014-8159 
=====================================================================

1. Summary:

Updated kernel packages that fix multiple security issues and two bugs are
now available for Red Hat Enterprise Linux 6.2 Advanced Update Support.

Red Hat Product Security 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 AUS (v. 6.2 server) - noarch, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

* A flaw was found in the way the Linux kernel's SCTP implementation
validated INIT chunks when performing Address Configuration Change
(ASCONF). A remote attacker could use this flaw to crash the system by
sending a specially crafted SCTP packet to trigger a NULL pointer
dereference on the system. (CVE-2014-7841, Important)

* It was found that the Linux kernel's Infiniband subsystem did not
properly sanitize input parameters while registering memory regions from
user space via the (u)verbs API. A local user with access to a
/dev/infiniband/uverbsX device could use this flaw to crash the system or,
potentially, escalate their privileges on the system. (CVE-2014-8159,
Important)

* An integer overflow flaw was found in the way the Linux kernel's Frame
Buffer device implementation mapped kernel memory to user space via the
mmap syscall. A local user able to access a frame buffer device file
(/dev/fb*) could possibly use this flaw to escalate their privileges on the
system. (CVE-2013-2596, Important)

* It was found that the parse_rock_ridge_inode_internal() function of the
Linux kernel's ISOFS implementation did not correctly check relocated
directories when processing Rock Ridge child link (CL) tags. An attacker
with physical access to the system could use a specially crafted ISO image
to crash the system or, potentially, escalate their privileges on the
system. (CVE-2014-5471, CVE-2014-5472, Low)

Red Hat would like to thank Mellanox for reporting the CVE-2014-8159 issue.
The CVE-2014-7841 issue was discovered by Liu Wei of Red Hat.

This update also fixes the following bugs:

* Previously, certain network device drivers did not accept ethtool
commands right after they were loaded. As a consequence, the current
setting of the specified device driver was not applied and an error message
was returned. The ETHTOOL_DELAY variable has been added, which makes sure
the ethtool utility waits for some time before it tries to apply the
options settings, thus fixing the bug. (BZ#1138299)

* During the memory allocation for a new socket to communicate to the
server, the rpciod daemon released a clean page which needed to be
committed. However, the commit was queueing indefinitely as the commit
could only be provided with a socket connection. As a consequence, a
deadlock occurred in rpciod. This update sets the PF_FSTRANS flag on the
work queue task prior to the socket allocation, and adds the
nfs_release_page check for the flag when deciding whether to make a commit
call, thus fixing this bug. (BZ#1192326)

All kernel users are advised to 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.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

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

1034490 - CVE-2013-2596 kernel: integer overflow in fb_mmap
1134099 - CVE-2014-5471 CVE-2014-5472 kernel: isofs: unbound recursion when processing relocated directories
1163087 - CVE-2014-7841 kernel: net: sctp: NULL pointer dereference in af->from_addr_param on malformed packet
1181166 - CVE-2014-8159 kernel: infiniband: uverbs: unprotected physical memory access

6. Package List:

Red Hat Enterprise Linux AUS (v. 6.2 server):

Source:
kernel-2.6.32-220.60.2.el6.src.rpm

noarch:
kernel-doc-2.6.32-220.60.2.el6.noarch.rpm
kernel-firmware-2.6.32-220.60.2.el6.noarch.rpm

x86_64:
kernel-2.6.32-220.60.2.el6.x86_64.rpm
kernel-debug-2.6.32-220.60.2.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm
kernel-debug-devel-2.6.32-220.60.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.60.2.el6.x86_64.rpm
kernel-devel-2.6.32-220.60.2.el6.x86_64.rpm
kernel-headers-2.6.32-220.60.2.el6.x86_64.rpm
perf-2.6.32-220.60.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 6.2):

Source:
kernel-2.6.32-220.60.2.el6.src.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.60.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm
python-perf-2.6.32-220.60.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-220.60.2.el6.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://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2013-2596
https://access.redhat.com/security/cve/CVE-2014-5471
https://access.redhat.com/security/cve/CVE-2014-5472
https://access.redhat.com/security/cve/CVE-2014-7841
https://access.redhat.com/security/cve/CVE-2014-8159
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2015 Red Hat, Inc.

Red Hat: 2015:0695-01: kernel: Important Advisory

Updated kernel packages that fix multiple security issues and two bugs are now available for Red Hat Enterprise Linux 6.2 Advanced Update Support

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
* A flaw was found in the way the Linux kernel's SCTP implementation validated INIT chunks when performing Address Configuration Change (ASCONF). A remote attacker could use this flaw to crash the system by sending a specially crafted SCTP packet to trigger a NULL pointer dereference on the system. (CVE-2014-7841, Important)
* It was found that the Linux kernel's Infiniband subsystem did not properly sanitize input parameters while registering memory regions from user space via the (u)verbs API. A local user with access to a /dev/infiniband/uverbsX device could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-8159, Important)
* An integer overflow flaw was found in the way the Linux kernel's Frame Buffer device implementation mapped kernel memory to user space via the mmap syscall. A local user able to access a frame buffer device file (/dev/fb*) could possibly use this flaw to escalate their privileges on the system. (CVE-2013-2596, Important)
* It was found that the parse_rock_ridge_inode_internal() function of the Linux kernel's ISOFS implementation did not correctly check relocated directories when processing Rock Ridge child link (CL) tags. An attacker with physical access to the system could use a specially crafted ISO image to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-5471, CVE-2014-5472, Low)
Red Hat would like to thank Mellanox for reporting the CVE-2014-8159 issue. The CVE-2014-7841 issue was discovered by Liu Wei of Red Hat.
This update also fixes the following bugs:
* Previously, certain network device drivers did not accept ethtool commands right after they were loaded. As a consequence, the current setting of the specified device driver was not applied and an error message was returned. The ETHTOOL_DELAY variable has been added, which makes sure the ethtool utility waits for some time before it tries to apply the options settings, thus fixing the bug. (BZ#1138299)
* During the memory allocation for a new socket to communicate to the server, the rpciod daemon released a clean page which needed to be committed. However, the commit was queueing indefinitely as the commit could only be provided with a socket connection. As a consequence, a deadlock occurred in rpciod. This update sets the PF_FSTRANS flag on the work queue task prior to the socket allocation, and adds the nfs_release_page check for the flag when deciding whether to make a commit call, thus fixing this bug. (BZ#1192326)
All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

Solution

Before applying this update, make sure all previously released erratarelevant to your system have been applied.For details on how to apply this update, refer to:https://access.redhat.com/articles/11258

References

https://access.redhat.com/security/cve/CVE-2013-2596 https://access.redhat.com/security/cve/CVE-2014-5471 https://access.redhat.com/security/cve/CVE-2014-5472 https://access.redhat.com/security/cve/CVE-2014-7841 https://access.redhat.com/security/cve/CVE-2014-8159 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AUS (v. 6.2 server):
Source: kernel-2.6.32-220.60.2.el6.src.rpm
noarch: kernel-doc-2.6.32-220.60.2.el6.noarch.rpm kernel-firmware-2.6.32-220.60.2.el6.noarch.rpm
x86_64: kernel-2.6.32-220.60.2.el6.x86_64.rpm kernel-debug-2.6.32-220.60.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-220.60.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.60.2.el6.x86_64.rpm kernel-devel-2.6.32-220.60.2.el6.x86_64.rpm kernel-headers-2.6.32-220.60.2.el6.x86_64.rpm perf-2.6.32-220.60.2.el6.x86_64.rpm perf-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.2):
Source: kernel-2.6.32-220.60.2.el6.src.rpm
x86_64: kernel-debug-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.60.2.el6.x86_64.rpm perf-debuginfo-2.6.32-220.60.2.el6.x86_64.rpm python-perf-2.6.32-220.60.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-220.60.2.el6.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://access.redhat.com/security/team/key/

Severity
Advisory ID: RHSA-2015:0695-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0695.html
Issued Date: : 2015-03-17
CVE Names: CVE-2013-2596 CVE-2014-5471 CVE-2014-5472 CVE-2014-7841 CVE-2014-8159

Topic

Updated kernel packages that fix multiple security issues and two bugs arenow available for Red Hat Enterprise Linux 6.2 Advanced Update Support.Red Hat Product Security has rated this update as having Important securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Relevant Releases Architectures

Red Hat Enterprise Linux AUS (v. 6.2 server) - noarch, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64

Bugs Fixed

1034490 - CVE-2013-2596 kernel: integer overflow in fb_mmap

1134099 - CVE-2014-5471 CVE-2014-5472 kernel: isofs: unbound recursion when processing relocated directories

1163087 - CVE-2014-7841 kernel: net: sctp: NULL pointer dereference in af->from_addr_param on malformed packet

1181166 - CVE-2014-8159 kernel: infiniband: uverbs: unprotected physical memory access

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