ELSA-2021-3057: Security update for 20 packages

ELSA-2021-3057, released August 11, 2021, fixes 3 CVEs across 20 products. One of them is being exploited (CVE-2021-22555); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEV

CVEs closed

None rated Critical

Exploited

CVE-2021-22555

Highest CVSS

7.8

Base score, 0 to 10

Highest EPSS

0.7868

99th percentile

Priority of the 3 CVEs

Patch now 1
                                Urgent 0
                                High 2
                                Routine 0

Fixed package versions

Product	Release	Fixed in
bpftool	ol 8	0:4.18.0-305.12.1.el8_4
kernel	ol 8	0:4.18.0-305.12.1.el8_4
kernel-abi-stablelists	ol 8	0:4.18.0-305.12.1.el8_4
kernel-core	ol 8	0:4.18.0-305.12.1.el8_4
kernel-cross-headers	ol 8	0:4.18.0-305.12.1.el8_4
kernel-debug	ol 8	0:4.18.0-305.12.1.el8_4
kernel-debug-core	ol 8	0:4.18.0-305.12.1.el8_4
kernel-debug-devel	ol 8	0:4.18.0-305.12.1.el8_4
kernel-debug-modules	ol 8	0:4.18.0-305.12.1.el8_4
kernel-debug-modules-extra	ol 8	0:4.18.0-305.12.1.el8_4
kernel-devel	ol 8	0:4.18.0-305.12.1.el8_4
kernel-doc	ol 8	0:4.18.0-305.12.1.el8_4
kernel-headers	ol 8	0:4.18.0-305.12.1.el8_4
kernel-modules	ol 8	0:4.18.0-305.12.1.el8_4
kernel-modules-extra	ol 8	0:4.18.0-305.12.1.el8_4
kernel-tools	ol 8	0:4.18.0-305.12.1.el8_4
kernel-tools-libs	ol 8	0:4.18.0-305.12.1.el8_4
kernel-tools-libs-devel	ol 8	0:4.18.0-305.12.1.el8_4
perf	ol 8	0:4.18.0-305.12.1.el8_4
python3-perf	ol 8	0:4.18.0-305.12.1.el8_4

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Patch now	CVE-2021-22555	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: r...	7.8	0.7868	KEVExploited
High	CVE-2021-22543	kpatch-patch-4_18_0-305_3_1: This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of...	7.8	0.0066	None reported
High	CVE-2021-3609	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: r...	7.0	0.0043	None reported

Also fixes CVE-2021-22555

RHSA-2021:3044
kpatch-patch-4_18_0-305, kpatch-patch-4_18_0-305_10_2, kpatch-patch-4_18_0-305_3_1 and 1 more on RHEL 8
RHSA-2021:3057
bpftool, kernel, kernel-abi-stablelists and 20 more on RHEL 8
RHSA-2021:3088
kernel-rt, kernel-rt-core, kernel-rt-debug and 9 more on RHEL 8

Vendor advisory

https://linux.oracle.com/errata/ELSA-2021-3057.html

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