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Red Hat Enterprise Linux 7 RHSA-2018-3666-01 Moderate Buffer Overflow

red hat
Calendar Grey November 27, 2018
Dist Redhat Esm H88
The recent kernel-rt security patch for Red Hat Enterprise Linux tackles issues of moderate risk and incorporates various bug corrections.
An update for kernel-rt is now available for Red Hat Enterprise Linux 7

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.

Summary

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)

Topics%20covered

Topics Covered

security advisory denial of service security update buffer overflow kernel patch Red Hat Enterprise Linux moderate severity

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

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:

Read the Full Advisory


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

Topic

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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory denial of service security update buffer overflow kernel patch Red Hat Enterprise Linux moderate severity

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

Bugs Fixed

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

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