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[RHSA-2016:1406-01] 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-2016:1406-01

Product: Red Hat Enterprise Linux

Advisory URL: https://access.redhat.com/errata/RHSA-2016:1406

Issue date: 2016-07-12

CVE Names: CVE-2016-4565

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

 

1. Summary:

 

Updated kernel packages that fix one security issue and several bugs are

now available for Red Hat Enterprise Linux 6.

 

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 Desktop (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

 

3. Description:

 

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

operating system.

 

Security Fix:

 

* A flaw was found in the way certain interfaces of the Linux kernel's

Infiniband subsystem used write() as bi-directional ioctl() replacement,

which could lead to insufficient memory security checks when being invoked

using the the splice() system call. A local unprivileged user on a system

with either Infiniband hardware present or RDMA Userspace Connection

Manager Access module explicitly loaded, could use this flaw to escalate

their privileges on the system. (CVE-2016-4565, Important)

 

Red Hat would like to thank Jann Horn for reporting this issue.

 

This update also fixes the following bugs:

 

* When providing some services and using the Integrated Services Digital

Network (ISDN), the system could terminate unexpectedly due to the call of

the tty_ldisc_flush() function. The provided patch removes this call and

the system no longer hangs in the described scenario. (BZ#1337443)

 

* An update to the Red Hat Enterprise Linux 6.8 kernel added calls of two

functions provided by the ipv6.ko kernel module, which added a dependency

on that module. On systems where ipv6.ko was prevented from being loaded,

the nfsd.ko and lockd.ko modules were unable to be loaded. Consequently, it

was not possible to run an NFS server or to mount NFS file systems as a

client. The underlying source code has been fixed by adding the

symbol_get() function, which determines if nfsd.ko and lock.ko are loaded

into memory and calls them through function pointers, not directly. As a

result, the aforementioned kernel modules are allowed to be loaded even if

ipv6.ko is not, and the NFS mount works as expected. (BZ#1341496)

 

* After upgrading the kernel, CPU load average increased compared to the

prior kernel version due to the modification of the scheduler. The provided

patch set reverts the calculation algorithm of this load average to the the

previous version thus resulting in relatively lower values under the same

system load. (BZ#1343015)

 

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/):

 

1310570 - CVE-2016-4565 kernel: infiniband: Unprivileged process can overwrite kernel memory using rdma_ucm.ko

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 6):

 

Source:

kernel-2.6.32-642.3.1.el6.src.rpm

 

i386:

kernel-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-642.3.1.el6.i686.rpm

kernel-devel-2.6.32-642.3.1.el6.i686.rpm

kernel-headers-2.6.32-642.3.1.el6.i686.rpm

perf-2.6.32-642.3.1.el6.i686.rpm

perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-642.3.1.el6.noarch.rpm

kernel-doc-2.6.32-642.3.1.el6.noarch.rpm

kernel-firmware-2.6.32-642.3.1.el6.noarch.rpm

 

x86_64:

kernel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-642.3.1.el6.x86_64.rpm

kernel-devel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-headers-2.6.32-642.3.1.el6.x86_64.rpm

perf-2.6.32-642.3.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Desktop Optional (v. 6):

 

i386:

kernel-debug-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-642.3.1.el6.i686.rpm

perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

python-perf-2.6.32-642.3.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-642.3.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node (v. 6):

 

Source:

kernel-2.6.32-642.3.1.el6.src.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-642.3.1.el6.noarch.rpm

kernel-doc-2.6.32-642.3.1.el6.noarch.rpm

kernel-firmware-2.6.32-642.3.1.el6.noarch.rpm

 

x86_64:

kernel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-642.3.1.el6.x86_64.rpm

kernel-devel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-headers-2.6.32-642.3.1.el6.x86_64.rpm

perf-2.6.32-642.3.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node Optional (v. 6):

 

x86_64:

kernel-debug-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-642.3.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

kernel-2.6.32-642.3.1.el6.src.rpm

 

i386:

kernel-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-642.3.1.el6.i686.rpm

kernel-devel-2.6.32-642.3.1.el6.i686.rpm

kernel-headers-2.6.32-642.3.1.el6.i686.rpm

perf-2.6.32-642.3.1.el6.i686.rpm

perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-642.3.1.el6.noarch.rpm

kernel-doc-2.6.32-642.3.1.el6.noarch.rpm

kernel-firmware-2.6.32-642.3.1.el6.noarch.rpm

 

ppc64:

kernel-2.6.32-642.3.1.el6.ppc64.rpm

kernel-bootwrapper-2.6.32-642.3.1.el6.ppc64.rpm

kernel-debug-2.6.32-642.3.1.el6.ppc64.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.ppc64.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.ppc64.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-642.3.1.el6.ppc64.rpm

kernel-devel-2.6.32-642.3.1.el6.ppc64.rpm

kernel-headers-2.6.32-642.3.1.el6.ppc64.rpm

perf-2.6.32-642.3.1.el6.ppc64.rpm

perf-debuginfo-2.6.32-642.3.1.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.ppc64.rpm

 

s390x:

kernel-2.6.32-642.3.1.el6.s390x.rpm

kernel-debug-2.6.32-642.3.1.el6.s390x.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.s390x.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.s390x.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-642.3.1.el6.s390x.rpm

kernel-devel-2.6.32-642.3.1.el6.s390x.rpm

kernel-headers-2.6.32-642.3.1.el6.s390x.rpm

kernel-kdump-2.6.32-642.3.1.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-642.3.1.el6.s390x.rpm

kernel-kdump-devel-2.6.32-642.3.1.el6.s390x.rpm

perf-2.6.32-642.3.1.el6.s390x.rpm

perf-debuginfo-2.6.32-642.3.1.el6.s390x.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.s390x.rpm

 

x86_64:

kernel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-642.3.1.el6.x86_64.rpm

kernel-devel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-headers-2.6.32-642.3.1.el6.x86_64.rpm

perf-2.6.32-642.3.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 6):

 

i386:

kernel-debug-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-642.3.1.el6.i686.rpm

perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

python-perf-2.6.32-642.3.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

 

ppc64:

kernel-debug-debuginfo-2.6.32-642.3.1.el6.ppc64.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-642.3.1.el6.ppc64.rpm

perf-debuginfo-2.6.32-642.3.1.el6.ppc64.rpm

python-perf-2.6.32-642.3.1.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.ppc64.rpm

 

s390x:

kernel-debug-debuginfo-2.6.32-642.3.1.el6.s390x.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-642.3.1.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-642.3.1.el6.s390x.rpm

perf-debuginfo-2.6.32-642.3.1.el6.s390x.rpm

python-perf-2.6.32-642.3.1.el6.s390x.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.s390x.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-642.3.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

kernel-2.6.32-642.3.1.el6.src.rpm

 

i386:

kernel-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-642.3.1.el6.i686.rpm

kernel-devel-2.6.32-642.3.1.el6.i686.rpm

kernel-headers-2.6.32-642.3.1.el6.i686.rpm

perf-2.6.32-642.3.1.el6.i686.rpm

perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-642.3.1.el6.noarch.rpm

kernel-doc-2.6.32-642.3.1.el6.noarch.rpm

kernel-firmware-2.6.32-642.3.1.el6.noarch.rpm

 

x86_64:

kernel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.i686.rpm

kernel-debug-devel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-642.3.1.el6.x86_64.rpm

kernel-devel-2.6.32-642.3.1.el6.x86_64.rpm

kernel-headers-2.6.32-642.3.1.el6.x86_64.rpm

perf-2.6.32-642.3.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 6):

 

i386:

kernel-debug-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-642.3.1.el6.i686.rpm

perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

python-perf-2.6.32-642.3.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-642.3.1.el6.i686.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-642.3.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-2.6.32-642.3.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-642.3.1.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-2016-4565

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 2016 Red Hat, Inc.

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