RHSA-2022:6978: 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): a use-after-free in clsroute filter implementation may lead to privilege escalation (CVE-2022-2588) 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_25_1-1-9.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_45_1-1-3.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_49_1-1-2.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_57_1-1-1.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_62_1-1-1.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_25_1-debuginfo-1-9.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_25_1-debugsource-1-9.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_45_1-debuginfo-1-3.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_45_1-debugsource-1-3.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_49_1-debuginfo-1-2.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_49_1-debugsource-1-2.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_57_1-debuginfo-1-1.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_57_1-debugsource-1-1.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_62_1-debuginfo-1-1.el8_4 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-305_62_1-debugsource-1-1.el8_4 - Compensating control
Apply the kpatch-patch security update so the kpatch live patch module is automatically loaded (via RPM post-install) to address the kernel use-after-free in the cls_route filter implementation that could lead to privilege escalation (CVE-2022-2588).
Event History
Frequently Asked Questions
What is the severity of RHSA-2022:6978?
The severity of RHSA-2022:6978 is rated as important.
How do I fix RHSA-2022:6978?
To fix RHSA-2022:6978, you should update to kpatch-patch versions 4_18_0-305_25_1-1-9.el8_4 or later.
What vulnerability does RHSA-2022:6978 address?
RHSA-2022:6978 addresses a use-after-free vulnerability in the cls_route filter implementation, which may lead to privilege escalation.
Which systems are impacted by RHSA-2022:6978?
RHSA-2022:6978 impacts systems running the affected versions of the kpatch-patch package.
Is there an alternative to applying the RHSA-2022:6978 update?
Applying the update for RHSA-2022:6978 is strongly recommended as it's the only effective way to mitigate the identified vulnerability.