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RHEL 7 : kernel-rt (RHSA-2016:1051)

high Nessus Plugin ID 91116

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

An update for kernel-rt is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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

The following packages have been upgraded to a newer upstream version:
kernel-rt (3.10.0-327.18.2). This version provides a number of bug fixes and enhancements, including :

* [scsi] bnx2fc: Fix FCP RSP residual parsing and remove explicit logouts

* [scsi] mpt3sas: Fix for Asynchronous completion of timedout IO and task abort of timedout IO

* [scsi] scsi_error: should not get sense for timeout IO in scsi error handler

* [scsi] Revert libiscsi: Reduce locking contention in fast path

* [mm] madvise: fix MADV_WILLNEED on shmem swapouts

* [cpufreq] intel_pstate: decrease number of 'HWP enabled' messages and enable HWP per CPU

* [kernel] sched: Robustify topology setup

* [kernel] sched/fair: Disable tg load_avg/runnable_avg update for root_task_group

* [kernel] sched/fair: Move hot load_avg/runnable_avg into separate cacheline

* [ib] mlx5: Fix RC transport send queue overhead computation

* [fs] nfsd: fix clp->cl_revoked list deletion causing softlock in nfsd

* [fs] ceph: multiple updates

(BZ#1322033)

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 issue.

Bug Fix(es) :

* The hotplug lock and the console semaphore could be acquired in an incorrect order, which could previously lead to a deadlock causing the system console to freeze. The underlying code has been adjusted to acquire the locks in the correct order, resolving the bug with the console. (BZ# 1324767)

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2016:1051

https://access.redhat.com/security/cve/cve-2016-0758

Plugin Details

Severity: High

ID: 91116

File Name: redhat-RHSA-2016-1051.nasl

Version: 2.12

Type: local

Agent: unix

Published: 5/13/2016

Updated: 10/24/2019

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-doc, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-debuginfo, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debuginfo-common-x86_64, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-kvm-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 5/12/2016

Vulnerability Publication Date: 6/27/2016

Reference Information

CVE: CVE-2016-0758

RHSA: 2016:1051