RedHat: RHSA-2021-2165:01 Important: kpatch-patch security update
Summary
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: userspace applications can misuse the KVM API to cause a write of
16 bytes at an offset up to 32 GB from vcpu->run (CVE-2021-3501)
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.
Summary
Solution
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
References
https://access.redhat.com/security/cve/CVE-2021-3501 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux BaseOS (v. 8):
Source:
kpatch-patch-4_18_0-305-1-1.el8.src.rpm
x86_64:
kpatch-patch-4_18_0-305-1-1.el8.x86_64.rpm
kpatch-patch-4_18_0-305-debuginfo-1-1.el8.x86_64.rpm
kpatch-patch-4_18_0-305-debugsource-1-1.el8.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux BaseOS (v. 8) - x86_64
Bugs Fixed
1950136 - CVE-2021-3501 kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run
