Linux · Security advisory · November 2, 2021

RHSA-2021:4056: Security update for 23 packages

RHSA-2021:4056, released November 2, 2021, fixes 3 CVEs across 23 products. None of them is reported as exploited. Patch Radar priority: High.

High
CVEs closed
3
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0148
73rd percentile

Priority of the 3 CVEs

Patch now 0 Urgent 0 High 3 Routine 0

Fixed package versions

ProductReleaseFixed in
bpftoolRHEL 80:4.18.0-305.25.1.el8_4
kernelRHEL 80:4.18.0-305.25.1.el8_4
kernel-abi-stablelistsRHEL 80:4.18.0-305.25.1.el8_4
kernel-coreRHEL 80:4.18.0-305.25.1.el8_4
kernel-debugRHEL 80:4.18.0-305.25.1.el8_4
kernel-debug-coreRHEL 80:4.18.0-305.25.1.el8_4
kernel-debug-develRHEL 80:4.18.0-305.25.1.el8_4
kernel-debug-modulesRHEL 80:4.18.0-305.25.1.el8_4
kernel-debug-modules-extraRHEL 80:4.18.0-305.25.1.el8_4
kernel-develRHEL 80:4.18.0-305.25.1.el8_4
kernel-docRHEL 80:4.18.0-305.25.1.el8_4
kernel-modulesRHEL 80:4.18.0-305.25.1.el8_4
kernel-modules-extraRHEL 80:4.18.0-305.25.1.el8_4
kernel-toolsRHEL 80:4.18.0-305.25.1.el8_4
kernel-tools-libsRHEL 80:4.18.0-305.25.1.el8_4
kernel-tools-libs-develRHEL 80:4.18.0-305.25.1.el8_4
kernel-zfcpdumpRHEL 80:4.18.0-305.25.1.el8_4
kernel-zfcpdump-coreRHEL 80:4.18.0-305.25.1.el8_4
kernel-zfcpdump-develRHEL 80:4.18.0-305.25.1.el8_4
kernel-zfcpdump-modulesRHEL 80:4.18.0-305.25.1.el8_4
kernel-zfcpdump-modules-extraRHEL 80:4.18.0-305.25.1.el8_4
perfRHEL 80:4.18.0-305.25.1.el8_4
python3-perfRHEL 80:4.18.0-305.25.1.el8_4

CVEs this fix closes

PriorityCVETitleImpactCVSSEPSSExploitation
High CVE-2020-36385 bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u... 7.8 0.0148 None reported
High CVE-2021-3656 bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u... 8.8 0.0066 None reported
High CVE-2021-0512 kpatch-patch-4_18_0-305_19_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 0.0028 None reported
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