RHSA-2022:8686: Important: kpatch-patch security update
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): KVM: cmpxchggpte can write to pfns outside the userspace region (CVE-2022-1158) 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_49_1-1-3.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_57_1-1-2.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_62_1-1-2.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_65_1-1-1.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_49_1-debuginfo-1-3.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_49_1-debugsource-1-3.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_57_1-debuginfo-1-2.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_57_1-debugsource-1-2.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_62_1-debuginfo-1-2.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_62_1-debugsource-1-2.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_65_1-debuginfo-1-1.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_65_1-debugsource-1-1.el8_4
Event History
Frequently Asked Questions
What is the severity of RHSA-2022:8686?
The severity of RHSA-2022:8686 is classified as important.
How do I fix RHSA-2022:8686?
To fix RHSA-2022:8686, update the kpatch-patch package to the recommended version as specified in Red Hat advisories.
What vulnerability does RHSA-2022:8686 address?
RHSA-2022:8686 addresses a vulnerability in KVM where cmpxchg_gpte can write to page frame numbers outside the userspace region, identified as CVE-2022-1158.
Which versions are affected by RHSA-2022:8686?
RHSA-2022:8686 affects multiple versions of the kpatch-patch package as listed in the advisory.
What is the impact of not addressing RHSA-2022:8686?
Not addressing RHSA-2022:8686 could lead to potential privilege escalation due to the vulnerability in the KVM module.