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...

CVE-2021-22543 is fixed in 51 products on 1 platform, first by RHSA-2021:3057, released August 10, 2021. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.8
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0066
51st percentile

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Security Fix(es): * kernel: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609) * kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543) * kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Where it's fixed

ProductFixed inFixReleased
Linux
bpftool · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
bpftool · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-abi-stablelists · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-abi-stablelists · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-core · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-core · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-cross-headers · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-debug · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-debug · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-debug-core · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-debug-core · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-debug-devel · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-debug-devel · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-debug-modules · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-debug-modules · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-debug-modules-extra · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-debug-modules-extra · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-devel · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-devel · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-doc · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-doc · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-headers · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-modules · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-modules · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-modules-extra · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-modules-extra · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-rt · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-rt-core · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-rt-debug · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-rt-debug-core · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-rt-debug-devel · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-rt-debug-kvm · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-rt-debug-modules · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-rt-debug-modules-extra · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-rt-devel · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-rt-kvm · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-rt-modules · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-rt-modules-extra · RHEL 8 0:4.18.0-305.12.1.rt7.84.el8_4 RHSA-2021:3088 Aug 10, 2021
kernel-tools · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-tools · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-tools-libs · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-tools-libs · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-tools-libs-devel · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-tools-libs-devel · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
kernel-uek · ol 8 0:5.4.17-2102.205.7.2.el8uek ELSA-2021-9450 Sep 16, 2021
kernel-uek-container · ol 8 0:5.4.17-2102.205.7.2.el8 ELSA-2021-9451 Sep 16, 2021
kernel-uek-container-debug · ol 8 0:5.4.17-2102.205.7.2.el8 ELSA-2021-9451 Sep 16, 2021
kernel-uek-debug · ol 8 0:5.4.17-2102.205.7.2.el8uek ELSA-2021-9450 Sep 16, 2021
kernel-uek-debug-devel · ol 8 0:5.4.17-2102.205.7.2.el8uek ELSA-2021-9450 Sep 16, 2021
kernel-uek-devel · ol 8 0:5.4.17-2102.205.7.2.el8uek ELSA-2021-9450 Sep 16, 2021
kernel-uek-doc · ol 8 0:5.4.17-2102.205.7.2.el8uek ELSA-2021-9450 Sep 16, 2021
kernel-uek-tools · ol 8 0:5.4.17-2102.205.7.2.el7uek ELSA-2021-9450 Sep 16, 2021
kernel-uek-tools-libs · ol 8 0:5.4.17-2102.205.7.2.el7uek ELSA-2021-9450 Sep 16, 2021
kernel-zfcpdump · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-zfcpdump-core · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-zfcpdump-devel · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-zfcpdump-modules · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kernel-zfcpdump-modules-extra · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
kpatch-patch-4_18_0-305 · RHEL 8 0:1-4.el8 RHSA-2021:3044 Aug 10, 2021
kpatch-patch-4_18_0-305_10_2 · RHEL 8 0:1-1.el8_4 RHSA-2021:3044 Aug 10, 2021
kpatch-patch-4_18_0-305_3_1 · RHEL 8 0:1-3.el8_4 RHSA-2021:3044 Aug 10, 2021
kpatch-patch-4_18_0-305_7_1 · RHEL 8 0:1-2.el8_4 RHSA-2021:3044 Aug 10, 2021
perf · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
perf · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021
python-perf · ol 8 0:5.4.17-2102.205.7.2.el7uek ELSA-2021-9450 Sep 16, 2021
python3-perf · RHEL 8 0:4.18.0-305.12.1.el8_4 RHSA-2021:3057 Aug 10, 2021
python3-perf · ol 8 0:4.18.0-305.12.1.el8_4 ELSA-2021-3057 Aug 11, 2021

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