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

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2015:1137-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2015-1137.html
Issue date:        2015-06-23
CVE Names:         CVE-2014-9420 CVE-2014-9529 CVE-2014-9584 
                   CVE-2015-1573 CVE-2015-1593 CVE-2015-1805 
                   CVE-2015-2830 
=====================================================================

1. Summary:

Updated kernel packages that fix multiple security issues and several bugs
are now available for Red Hat Enterprise Linux 7.

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 Client (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

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

* It was found that the Linux kernel's implementation of vectored pipe read
and write functionality did not take into account the I/O vectors that were
already processed when retrying after a failed atomic access operation,
potentially resulting in memory corruption due to an I/O vector array
overrun. A local, unprivileged user could use this flaw to crash the system
or, potentially, escalate their privileges on the system. (CVE-2015-1805,
Important)

* A race condition flaw was found in the way the Linux kernel keys
management subsystem performed key garbage collection. A local attacker
could attempt accessing a key while it was being garbage collected, which
would cause the system to crash. (CVE-2014-9529, Moderate)

* A flaw was found in the way the Linux kernel's 32-bit emulation
implementation handled forking or closing of a task with an 'int80' entry.
A local user could potentially use this flaw to escalate their privileges
on the system. (CVE-2015-2830, Low)

* It was found that the Linux kernel's ISO file system implementation did
not correctly limit the traversal of Rock Ridge extension Continuation
Entries (CE). An attacker with physical access to the system could use this
flaw to trigger an infinite loop in the kernel, resulting in a denial of
service. (CVE-2014-9420, Low)

* An information leak flaw was found in the way the Linux kernel's ISO9660
file system implementation accessed data on an ISO9660 image with RockRidge
Extension Reference (ER) records. An attacker with physical access to the
system could use this flaw to disclose up to 255 bytes of kernel memory.
(CVE-2014-9584, Low)

* A flaw was found in the way the nft_flush_table() function of the Linux
kernel's netfilter tables implementation flushed rules that were
referencing deleted chains. A local user who has the CAP_NET_ADMIN
capability could use this flaw to crash the system. (CVE-2015-1573, Low)

* An integer overflow flaw was found in the way the Linux kernel randomized
the stack for processes on certain 64-bit architecture systems, such as
x86-64, causing the stack entropy to be reduced by four. (CVE-2015-1593,
Low)

Red Hat would like to thank Carl Henrik Lunde for reporting CVE-2014-9420
and CVE-2014-9584. The security impact of the CVE-2015-1805 issue was
discovered by Red Hat.

This update also fixes several bugs. Documentation for these changes is
available from the following Knowledgebase article:
https://access.redhat.com/articles/1469163

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/):

1175235 - CVE-2014-9420 Kernel: fs: isofs: infinite loop in CE record entries
1179813 - CVE-2014-9529 kernel: use-after-free during key garbage collection
1180119 - CVE-2014-9584 kernel: isofs: unchecked printing of ER records
1190966 - CVE-2015-1573 kernel: panic while flushing nftables rules that reference deleted chains.
1192519 - CVE-2015-1593 kernel: Linux stack ASLR implementation Integer overflow
1202855 - CVE-2015-1805 kernel: pipe: iovec overrun leading to memory corruption
1208598 - CVE-2015-2830 kernel: int80 fork from 64-bit tasks mishandling

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
kernel-3.10.0-229.7.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-229.7.2.el7.noarch.rpm
kernel-doc-3.10.0-229.7.2.el7.noarch.rpm

x86_64:
kernel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.7.2.el7.x86_64.rpm
kernel-devel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-headers-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-229.7.2.el7.x86_64.rpm
perf-3.10.0-229.7.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
kernel-debug-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-229.7.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
kernel-3.10.0-229.7.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-229.7.2.el7.noarch.rpm
kernel-doc-3.10.0-229.7.2.el7.noarch.rpm

x86_64:
kernel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.7.2.el7.x86_64.rpm
kernel-devel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-headers-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-229.7.2.el7.x86_64.rpm
perf-3.10.0-229.7.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
kernel-debug-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-229.7.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
kernel-3.10.0-229.7.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-229.7.2.el7.noarch.rpm
kernel-doc-3.10.0-229.7.2.el7.noarch.rpm

ppc64:
kernel-3.10.0-229.7.2.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-229.7.2.el7.ppc64.rpm
kernel-debug-3.10.0-229.7.2.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-229.7.2.el7.ppc64.rpm
kernel-debug-devel-3.10.0-229.7.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-229.7.2.el7.ppc64.rpm
kernel-devel-3.10.0-229.7.2.el7.ppc64.rpm
kernel-headers-3.10.0-229.7.2.el7.ppc64.rpm
kernel-tools-3.10.0-229.7.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.el7.ppc64.rpm
kernel-tools-libs-3.10.0-229.7.2.el7.ppc64.rpm
perf-3.10.0-229.7.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-229.7.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.ppc64.rpm

s390x:
kernel-3.10.0-229.7.2.el7.s390x.rpm
kernel-debug-3.10.0-229.7.2.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-229.7.2.el7.s390x.rpm
kernel-debug-devel-3.10.0-229.7.2.el7.s390x.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-229.7.2.el7.s390x.rpm
kernel-devel-3.10.0-229.7.2.el7.s390x.rpm
kernel-headers-3.10.0-229.7.2.el7.s390x.rpm
kernel-kdump-3.10.0-229.7.2.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-229.7.2.el7.s390x.rpm
kernel-kdump-devel-3.10.0-229.7.2.el7.s390x.rpm
perf-3.10.0-229.7.2.el7.s390x.rpm
perf-debuginfo-3.10.0-229.7.2.el7.s390x.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.s390x.rpm

x86_64:
kernel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.7.2.el7.x86_64.rpm
kernel-devel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-headers-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-229.7.2.el7.x86_64.rpm
perf-3.10.0-229.7.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
kernel-3.10.0-229.7.2.ael7b.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-229.7.2.ael7b.noarch.rpm
kernel-doc-3.10.0-229.7.2.ael7b.noarch.rpm

ppc64le:
kernel-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-bootwrapper-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-debug-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-debuginfo-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-devel-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-headers-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-tools-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-tools-libs-3.10.0-229.7.2.ael7b.ppc64le.rpm
perf-3.10.0-229.7.2.ael7b.ppc64le.rpm
perf-debuginfo-3.10.0-229.7.2.ael7b.ppc64le.rpm
python-perf-debuginfo-3.10.0-229.7.2.ael7b.ppc64le.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
kernel-debug-debuginfo-3.10.0-229.7.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-229.7.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-229.7.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-229.7.2.el7.ppc64.rpm
python-perf-3.10.0-229.7.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.ppc64.rpm

s390x:
kernel-debug-debuginfo-3.10.0-229.7.2.el7.s390x.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-229.7.2.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-229.7.2.el7.s390x.rpm
perf-debuginfo-3.10.0-229.7.2.el7.s390x.rpm
python-perf-3.10.0-229.7.2.el7.s390x.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.s390x.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-229.7.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64le:
kernel-debug-debuginfo-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-debug-devel-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-debuginfo-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.ael7b.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-229.7.2.ael7b.ppc64le.rpm
perf-debuginfo-3.10.0-229.7.2.ael7b.ppc64le.rpm
python-perf-3.10.0-229.7.2.ael7b.ppc64le.rpm
python-perf-debuginfo-3.10.0-229.7.2.ael7b.ppc64le.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
kernel-3.10.0-229.7.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-229.7.2.el7.noarch.rpm
kernel-doc-3.10.0-229.7.2.el7.noarch.rpm

x86_64:
kernel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.7.2.el7.x86_64.rpm
kernel-devel-3.10.0-229.7.2.el7.x86_64.rpm
kernel-headers-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-229.7.2.el7.x86_64.rpm
perf-3.10.0-229.7.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
kernel-debug-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-229.7.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-3.10.0-229.7.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.7.2.el7.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-2014-9420
https://access.redhat.com/security/cve/CVE-2014-9529
https://access.redhat.com/security/cve/CVE-2014-9584
https://access.redhat.com/security/cve/CVE-2015-1573
https://access.redhat.com/security/cve/CVE-2015-1593
https://access.redhat.com/security/cve/CVE-2015-1805
https://access.redhat.com/security/cve/CVE-2015-2830
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2015 Red Hat, Inc.
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