Linux · Security advisory · August 11, 2021

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
3
None rated Critical
Exploited
1
CVE-2021-22555
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.7868
99th percentile

Priority of the 3 CVEs

Patch now 1 Urgent 0 High 2 Routine 0

Fixed package versions

ProductReleaseFixed in
bpftoolol 80:4.18.0-305.12.1.el8_4
kernelol 80:4.18.0-305.12.1.el8_4
kernel-abi-stablelistsol 80:4.18.0-305.12.1.el8_4
kernel-coreol 80:4.18.0-305.12.1.el8_4
kernel-cross-headersol 80:4.18.0-305.12.1.el8_4
kernel-debugol 80:4.18.0-305.12.1.el8_4
kernel-debug-coreol 80:4.18.0-305.12.1.el8_4
kernel-debug-develol 80:4.18.0-305.12.1.el8_4
kernel-debug-modulesol 80:4.18.0-305.12.1.el8_4
kernel-debug-modules-extraol 80:4.18.0-305.12.1.el8_4
kernel-develol 80:4.18.0-305.12.1.el8_4
kernel-docol 80:4.18.0-305.12.1.el8_4
kernel-headersol 80:4.18.0-305.12.1.el8_4
kernel-modulesol 80:4.18.0-305.12.1.el8_4
kernel-modules-extraol 80:4.18.0-305.12.1.el8_4
kernel-toolsol 80:4.18.0-305.12.1.el8_4
kernel-tools-libsol 80:4.18.0-305.12.1.el8_4
kernel-tools-libs-develol 80:4.18.0-305.12.1.el8_4
perfol 80:4.18.0-305.12.1.el8_4
python3-perfol 80:4.18.0-305.12.1.el8_4

CVEs this fix closes

PriorityCVETitleImpactCVSSEPSSExploitation
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
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