| Description: | Summary:
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): * An
use-after-free flaw was found in the Linux kernel which enables a race condition
in the L2TPv3 IP Encapsulation feature. A local user could use this flaw to
escalate their privileges or crash the system. (CVE-2016-10200, Important) * A
flaw was found that can be triggered in keyring_search_iterator in keyring.c if
type- match is NULL. A local user could use this flaw to crash the system or,
potentially, escalate their privileges. (CVE-2017-2647, Important) * It was
found that the NFSv4 server in the Linux kernel did not properly validate layout
type when processing NFSv4 pNFS LAYOUTGET and GETDEVICEINFO operands. A remote
attacker could use this flaw to soft-lockup the system and thus cause denial of
service. (CVE-2017-8797, Important) This update also fixes multiple Moderate and
Low impact security issues: * CVE-2015-8839, CVE-2015-8970, CVE-2016-9576,
CVE-2016-7042, CVE-2016-7097, CVE-2016-8645, CVE-2016-9576, CVE-2016-9588,
CVE-2016-9806, CVE-2016-10088, CVE-2016-10147, CVE-2017-2596, CVE-2017-2671,
CVE-2017-5970, CVE-2017-6001, CVE-2017-6951, CVE-2017-7187, CVE-2017-7616,
CVE-2017-7889, CVE-2017-8890, CVE-2017-9074, CVE-2017-8890, CVE-2017-9075,
CVE-2017-8890, CVE-2017-9076, CVE-2017-8890, CVE-2017-9077, CVE-2017-9242,
CVE-2014-7970, CVE-2014-7975, CVE-2016-6213, CVE-2016-9604, CVE-2016-9685
Documentation for these issues is available from the Release Notes document
linked from the References section. Red Hat would like to thank Igor Redko
(Virtuozzo) and Andrey Ryabinin (Virtuozzo) for reporting CVE-2017-2647 Igor
Redko (Virtuozzo) and Vasily Averin (Virtuozzo) for reporting CVE-2015-8970
Marco Grassi for reporting CVE-2016-8645 and Dmitry Vyukov (Google Inc.) for
reporting CVE-2017-2596. The CVE-2016-7042 issue was discovered by Ondrej Kozina
(Red Hat) the CVE-2016-7097 issue was discovered by Andreas Gruenbacher (Red
Hat) and Jan Kara (SUSE) the CVE-2016-6213 and CVE-2016-9685 issues were
discovered by Qian Cai (Red Hat) and the CVE-2016-9604 issue was discovered by
David Howells (Red Hat). Additional Changes: For detailed information on other
changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes
linked from the References section.
Affected Software/OS:
kernel on Red Hat Enterprise Linux Server (v. 7)
Solution:
Please Install the Updated Packages.
CVSS Score:
7.8
CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:C
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