Linux · Security advisory · April 6, 2021

RHSA-2021:1081: Security update for 12 packages

RHSA-2021:1081, released April 6, 2021, fixes 8 CVEs across 12 products. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Exploitation more likely

Vendor assessment

Highest EPSS

0.0664

93rd percentile

Priority of the 8 CVEs

Patch now 0
                                Urgent 0
                                High 6
                                Routine 2

Fixed package versions

Product	Release	Fixed in
kernel-rt	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3
kernel-rt-core	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3
kernel-rt-debug	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3
kernel-rt-debug-core	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3
kernel-rt-debug-devel	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3
kernel-rt-debug-kvm	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3
kernel-rt-debug-modules	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3
kernel-rt-debug-modules-extra	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3
kernel-rt-devel	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3
kernel-rt-kvm	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3
kernel-rt-modules	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3
kernel-rt-modules-extra	RHEL 8	0:4.18.0-240.22.1.rt7.77.el8_3

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2020-28374	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u...	8.1	0.0664	None reported
High	CVE-2021-27365	kernel-debug-core: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u...	7.8	0.0210	None reported
High	CVE-2021-26708	kernel-modules: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u...	7.8	0.0160	None reported
High	CVE-2021-3347	kernel-doc: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u...	7.8	0.0137	None reported
High	CVE-2021-27364	kernel-debug-core: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u...	7.1	0.0097	None reported
High	CVE-2020-0466	kernel-rt: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high...	7.8	0.0028	None reported
Routine	CVE-2021-27363	kernel-debug-core: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u...	4.4	0.0071	None reported
Routine	CVE-2020-27152	kernel-modules-extra: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u...	5.5	0.0057	None reported

Also fixes CVE-2020-28374

ELSA-2021-9007
kernel-uek-container, kernel-uek-container-debug on ol 8
ELSA-2021-1093
bpftool, kernel, kernel-abi-whitelists and 17 more on ol 8
RHSA-2021:1093
bpftool, kernel, kernel-abi-whitelists and 20 more on RHEL 8
ELSA-2021-9037
kernel-uek, kernel-uek-debug, kernel-uek-debug-devel and 6 more on ol 8

Vendor advisory

https://access.redhat.com/errata/RHSA-2021:1081

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