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RedHat: RHSA-2020-3221-01 Important: Kernel-Rt Security and Bug Fix Update

red hat
Calendar Grey July 29, 2020
Dist Redhat Esm H88
Significant kernel-rt patch released for Red Hat Enterprise Linux, rectifying severe vulnerabilities and enhancing system protection.
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: kernel: DAX hugepages not considered during mremap (CVE-2020-10757)
* kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in drivers/net/wireless/marvell/mwifiex/scan.c (CVE-2020-12653)
* kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in drivers/net/wireless/marvell/mwifiex/wmm.c (CVE-2020-12654)
* kernel: use-after-free caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver (CVE-2019-19527)
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: provide infrastructure to support dual-signing of the kernel (foundation to help address CVE-2020-10713) (BZ#1837438)
* kernel-rt: update to the latest RHEL7.8.z3 source tree (BZ#1848017)

Topics%20covered

Topics Covered

security advisory buffer overflow bug fix Red Hat Enterprise Linux kernel-rt use-after-free Important security impact

References

https://access.redhat.com/security/cve/CVE-2019-19527 https://access.redhat.com/security/cve/CVE-2020-10757 https://access.redhat.com/security/cve/CVE-2020-12653 https://access.redhat.com/security/cve/CVE-2020-12654 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/security/vulnerabilities/grub2bootloader

Package List

Red Hat Enterprise Linux for Real Time for NFV (v. 7):
Source: kernel-rt-3.10.0-1127.18.2.rt56.1116.el7.src.rpm
noarch: kernel-rt-doc-3.10.0-1127.18.2.rt56.1116.el7.noarch.rpm
x86_64: kernel-rt-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-debug-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-devel-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-kvm-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-trace-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
Red Hat Enterprise Linux Realtime (v. 7):
Source:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:3221-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3221
Issue date: 2020-07-29

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 buffer overflow bug fix Red Hat Enterprise Linux kernel-rt use-after-free Important security impact

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

1783498 - CVE-2019-19527 kernel: use-after-free caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver

1831868 - CVE-2020-12653 kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in drivers/net/wireless/marvell/mwifiex/scan.c

1832530 - CVE-2020-12654 kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in drivers/net/wireless/marvell/mwifiex/wmm.c

1842525 - CVE-2020-10757 kernel: kernel: DAX hugepages not considered during mremap

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