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RedHat: RHSA-2019-3089-01 Important: Kernel-RT Security Fix

red hat
Calendar Grey October 16, 2019
Dist Redhat Esm H88
Crucial safety enhancement for kernel-rt in Red Hat Enterprise Linux 7 tackling several high-level vulnerabilities.
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: Use-after-free in __blk_drain_queue() function in block/blk-core.c (CVE-2018-20856)
* kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c (CVE-2019-3846)
* hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (CVE-2019-9506)
* kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c (CVE-2019-10126)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* kernel-rt: update to the RHEL7.7.z batch#2 source tree (BZ#1748570)

Topics%20covered

Topics Covered

security advisory kernel security Red Hat Enterprise Linux bug fix update importance rating

References

https://access.redhat.com/security/cve/CVE-2018-20856 https://access.redhat.com/security/cve/CVE-2019-3846 https://access.redhat.com/security/cve/CVE-2019-9506 https://access.redhat.com/security/cve/CVE-2019-10126 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux for Real Time for NFV (v. 7):
Source: kernel-rt-3.10.0-1062.4.1.rt56.1027.el7.src.rpm
noarch: kernel-rt-doc-3.10.0-1062.4.1.rt56.1027.el7.noarch.rpm
x86_64: kernel-rt-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-debug-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-devel-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-kvm-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-trace-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-1062.4.1.rt56.1027.el7.x86_64.rpm
Red Hat Enterprise Linux Realtime (v. 7):
Source: kernel-rt-3.10.0-1062.4.1.rt56.1027.el7.src.rpm
noarch:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:3089-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:3089
Issue date: 2019-10-16

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 Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory kernel security Red Hat Enterprise Linux bug fix update importance rating

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

1713059 - CVE-2019-3846 kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c

1716992 - CVE-2019-10126 kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c

1727857 - CVE-2019-9506 hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB)

1738705 - CVE-2018-20856 kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c

1748570 - kernel-rt: update to the RHEL7.7.z batch#2 source tree

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