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AUSCERT External Security Bulletin Redistribution
ESB-2018.3681
Moderate: kernel-rt security and bug fix update
27 November 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel-rt
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Impact/Access: Root Compromise -- Remote/Unauthenticated
Access Privileged Data -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-14646 CVE-2018-14633
Reference: ESB-2018.3250
ESB-2018.3226
ESB-2018.3020
ESB-2018.2981
Original Bulletin:
https://access.redhat.com/errata/RHSA-2018:3666
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Red Hat Security Advisory
Synopsis: Moderate: kernel-rt security and bug fix update
Advisory ID: RHSA-2018:3666-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:3666
Issue date: 2018-11-26
CVE Names: CVE-2018-14633 CVE-2018-14646
=====================================================================
1. Summary:
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 Moderate. 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.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Realtime (v. 7) - noarch, x86_64
Red Hat Enterprise Linux for Real Time for NFV (v. 7) - noarch, x86_64
3. Description:
The kernel-rt packages provide the Real Time Linux Kernel, which enables
fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: stack-based buffer overflow in chap_server_compute_md5() in iscsi
target (CVE-2018-14633)
* kernel: NULL pointer dereference in af_netlink.c:__netlink_ns_capable()
allows for denial of service (CVE-2018-14646)
For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.
Red Hat would like to thank Vincent Pelletier for reporting CVE-2018-14633
and Christian Brauner for reporting CVE-2018-14646.
Bug Fix(es):
* The kernel-rt packages have been upgraded to the 3.10.0-957.1.2 source
tree, which provides a number of bug fixes over the previous version.
(BZ#1632386)
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
The system must be rebooted for this update to take effect.
5. Bugs fixed (https://bugzilla.redhat.com/):
1626035 - CVE-2018-14633 kernel: stack-based buffer overflow in chap_server_compute_md5() in iscsi target
1630124 - CVE-2018-14646 kernel: NULL pointer dereference in af_netlink.c:__netlink_ns_capable() allows for denial of service
1632386 - kernel-rt: update to the RHEL7.6.z batch#1 source tree
6. Package List:
Red Hat Enterprise Linux for Real Time for NFV (v. 7):
Source:
kernel-rt-3.10.0-957.1.3.rt56.913.el7.src.rpm
noarch:
kernel-rt-doc-3.10.0-957.1.3.rt56.913.el7.noarch.rpm
x86_64:
kernel-rt-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-debug-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-debug-kvm-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-kvm-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-trace-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-trace-kvm-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
Red Hat Enterprise Linux Realtime (v. 7):
Source:
kernel-rt-3.10.0-957.1.3.rt56.913.el7.src.rpm
noarch:
kernel-rt-doc-3.10.0-957.1.3.rt56.913.el7.noarch.rpm
x86_64:
kernel-rt-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-debug-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-trace-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-957.1.3.rt56.913.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-2018-14633
https://access.redhat.com/security/cve/CVE-2018-14646
https://access.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2018 Red Hat, Inc.
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