RHSA-2022:8989 — Security Advisory

Red Hat Security Advisory: kpatch-patch security update

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Severity

Important

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · December 14, 2022

Updated · June 28, 2026

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The kpatch management tool provides a kernel patching infrastructure which allows you to patch a running kernel without rebooting or restarting any processes.

Security Fix(es):

  • kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region (CVE-2022-1158)

  • kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)

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.

Related CVEs

RHSA-2022:8989 — Red Hat Security Advisory: kpatch-patch security update | PulseLinux