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Test Kennung:
Kategorie:Red Hat Local Security Checks
Titel:RedHat Update for kernel RHSA-2016:1033-01
Zusammenfassung:The remote host is missing an update for the 'kernel'; package(s) announced via the referenced advisory.
The remote host is missing an update for the 'kernel'
package(s) announced via the referenced advisory.

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

Security Fix(es):

* A flaw was found in the way the Linux kernel's ASN.1 DER decoder
processed certain certificate files with tags of indefinite length. A
local, unprivileged user could use a specially crafted X.509 certificate
DER file to crash the system or, potentially, escalate their privileges on
the system. (CVE-2016-0758, Important)

Red Hat would like to thank Philip Pettersson of Samsung for reporting this

Bug Fix(es):

* Under certain conditions, the migration threads could race with the CPU
hotplug, which could cause a deadlock. A set of patches has been provided
to fix this bug, and the deadlock no longer occurs in the system.

* A bug in the code that cleans up revoked delegations could previously
cause a soft lockup in the NFS server. This patch fixes the underlying
source code, so the lockup no longer occurs. (BZ#1311582)

* The second attempt to reload Common Application Programming Interface
(CAPI) devices on the little-endian variant of IBM Power Systems previously
failed. The provided set of patches fixes this bug, and reloading works as
intended. (BZ#1312396)

* Due to inconsistencies in page size of IOMMU, the NVMe device, and the
kernel, the BUG_ON signal previously occurred in the nvme_setup_prps()
function, leading to the system crash while setting up the DMA transfer.
The provided patch sets the default NVMe page size to 4k, thus preventing
the system crash. (BZ#1312399)

* Previously, on a system using the Infiniband mlx5 driver used for the SRP
stack, a hard lockup previously occurred after the kernel exceeded time
with lock held with interrupts blocked. As a consequence, the system
panicked. This update fixes this bug, and the system no longer panics in
this situation. (BZ#1313814)

* On the little-endian variant of IBM Power Systems, the kernel previously
crashed in the bitmap_weight() function while running the memory affinity
script. The provided patch fortifies the topology setup and prevents
sd- child from being set to NULL when it is already NULL. As a result, the
memory affinity script runs successfully. (BZ#1316158)

* When a KVM guest wrote random values to the special-purpose registers
(SPR) Instruction Authority Mask Register (IAMR), the guest and the
corresponding QEMU process previously hung. This update adds the code which
sets SPRs to a suitable neutral value on guest exit, thus fixing this bug.

* Under heavy iSCSI traffic load, the system previously panicked due to a
race in the locking code leading to a ...

Description truncated, please see the referenced URL(s) for more information.

Affected Software/OS:
kernel on Red Hat Enterprise Linux Server (v. 7)

Please Install the Updated Packages.

CVSS Score:

CVSS Vector:

Querverweis: Common Vulnerability Exposure (CVE) ID: CVE-2016-0758
BugTraq ID: 90626
HPdes Security Advisory: HPSBHF3548
RedHat Security Advisories: RHSA-2016:1033
RedHat Security Advisories: RHSA-2016:1051
RedHat Security Advisories: RHSA-2016:1055
SuSE Security Announcement: SUSE-SU-2016:1672 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:1690 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:1937 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:1961 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:1985 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:1994 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:1995 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2000 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2001 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2002 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2003 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2005 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2006 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2007 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2009 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2010 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2011 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2014 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:2105 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:1641 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:2184 (Google Search)
CopyrightCopyright (C) 2016 Greenbone Networks GmbH

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