ELSA-2021-4356: Security update for 20 packages

ELSA-2021-4356, released November 16, 2021, fixes 42 CVEs across 20 products. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.8

Base score, 0 to 10

Highest EPSS

0.0760

94th percentile

Priority of the 42 CVEs

Patch now 0
                                Urgent 0
                                High 9
                                Routine 33

Fixed package versions

Product	Release	Fixed in
bpftool	ol 8	0:4.18.0-348.el8
kernel	ol 8	0:4.18.0-348.el8
kernel-abi-stablelists	ol 8	0:4.18.0-348.el8
kernel-core	ol 8	0:4.18.0-348.el8
kernel-cross-headers	ol 8	0:4.18.0-348.el8
kernel-debug	ol 8	0:4.18.0-348.el8
kernel-debug-core	ol 8	0:4.18.0-348.el8
kernel-debug-devel	ol 8	0:4.18.0-348.el8
kernel-debug-modules	ol 8	0:4.18.0-348.el8
kernel-debug-modules-extra	ol 8	0:4.18.0-348.el8
kernel-devel	ol 8	0:4.18.0-348.el8
kernel-doc	ol 8	0:4.18.0-348.el8
kernel-headers	ol 8	0:4.18.0-348.el8
kernel-modules	ol 8	0:4.18.0-348.el8
kernel-modules-extra	ol 8	0:4.18.0-348.el8
kernel-tools	ol 8	0:4.18.0-348.el8
kernel-tools-libs	ol 8	0:4.18.0-348.el8
kernel-tools-libs-devel	ol 8	0:4.18.0-348.el8
perf	ol 8	0:4.18.0-348.el8
python3-perf	ol 8	0:4.18.0-348.el8

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2021-31440	kernel-debug-devel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	7.0	0.0175	None reported
High	CVE-2021-3489	kernel-rt-debug-modules-extra: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high...	7.8	0.0055	None reported
High	CVE-2020-36386	kernel-zfcpdump: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	7.1	0.0055	None reported
High	CVE-2021-23133	kernel-rt-debug-kvm: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high...	7.0	0.0048	None reported
High	CVE-2021-20194	kernel-tools-libs-devel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	7.8	0.0040	None reported
High	CVE-2021-33200	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	7.8	0.0038	None reported
High	CVE-2020-29368	kernel-abi-stablelists: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	7.0	0.0037	None reported
High	CVE-2021-3600	kernel-rt-debug-devel: 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
High	CVE-2021-3348	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	7.0	0.0026	None reported
Routine	CVE-2020-26147	kernel-rt-modules: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high...	5.4	0.0760	None reported
Routine	CVE-2020-26139	kernel-rt-kvm: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high...	5.3	0.0649	None reported
Routine	CVE-2020-24586	kernel-rt-modules: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high...	4.3	0.0577	None reported
Routine	CVE-2020-26146	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	5.3	0.0562	None reported
Routine	CVE-2020-26144	Windows Wireless Networking Spoofing Vulnerability	6.5	0.0491	Exploitation Less Likely
Routine	CVE-2020-26143	kernel-rt-kvm: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high...	6.5	0.0417	None reported
Routine	CVE-2020-24588	Windows Wireless Networking Spoofing Vulnerability	6.5	0.0361	Exploitation Less Likely
Routine	CVE-2020-26145	kernel-modules: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	6.5	0.0352	None reported
Routine	CVE-2020-26141	kernel-rt-kvm: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high...	6.5	0.0307	None reported
Routine	CVE-2020-26140	kernel-rt-kvm: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high...	6.5	0.0292	None reported
Routine	CVE-2020-24587	Windows Wireless Networking Information Disclosure Vulnerability	6.5	0.0259	Exploitation Less Likely
Routine	CVE-2020-36158	kernel-devel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	6.7	0.0231	None reported
Routine	CVE-2021-29155	kernel-debug-modules: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	5.5	0.0107	None reported
Routine	CVE-2021-0129	kernel-modules: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	5.7	0.0083	None reported
Routine	CVE-2021-3679	kernel-modules: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	5.5	0.0075	None reported
Routine	CVE-2021-31916	kernel-doc: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ou...	6.7	0.0070	None reported

Also fixes CVE-2021-31440

RHSA-2021:4356
bpftool, kernel, kernel-abi-stablelists and 20 more on RHEL 8
RHSA-2021:4140
kernel-rt, kernel-rt-core, kernel-rt-debug and 9 more on RHEL 8
ALSA-2021:4356
kernel-tools-libs-devel on almalinux 8

Vendor advisory

https://linux.oracle.com/errata/ELSA-2021-4356.html

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