- Vulnerability/
- RHSA-2021:3436
RHSA-2021:3436: Important: kpatch-patch security update
First published: Tue Sep 07 2021(Updated: )
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.<br>Security Fix(es):<br><li> kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576)</li> 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 | Affected Version | How to fix |
|---|---|---|
| redhat/kpatch-patch | <4_18_0-305-1-5.el8 | 4_18_0-305-1-5.el8 |
| redhat/kpatch-patch | <4_18_0-305_10_2-1-2.el8_4 | 4_18_0-305_10_2-1-2.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_12_1-1-1.el8_4 | 4_18_0-305_12_1-1-1.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_3_1-1-4.el8_4 | 4_18_0-305_3_1-1-4.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_7_1-1-3.el8_4 | 4_18_0-305_7_1-1-3.el8_4 |
| redhat/kpatch-patch | <4_18_0-305-1-5.el8 | 4_18_0-305-1-5.el8 |
| redhat/kpatch-patch | <4_18_0-305-debuginfo-1-5.el8 | 4_18_0-305-debuginfo-1-5.el8 |
| redhat/kpatch-patch | <4_18_0-305-debugsource-1-5.el8 | 4_18_0-305-debugsource-1-5.el8 |
| redhat/kpatch-patch | <4_18_0-305_10_2-1-2.el8_4 | 4_18_0-305_10_2-1-2.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_10_2-debuginfo-1-2.el8_4 | 4_18_0-305_10_2-debuginfo-1-2.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_10_2-debugsource-1-2.el8_4 | 4_18_0-305_10_2-debugsource-1-2.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_12_1-1-1.el8_4 | 4_18_0-305_12_1-1-1.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_12_1-debuginfo-1-1.el8_4 | 4_18_0-305_12_1-debuginfo-1-1.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_12_1-debugsource-1-1.el8_4 | 4_18_0-305_12_1-debugsource-1-1.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_3_1-1-4.el8_4 | 4_18_0-305_3_1-1-4.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_3_1-debuginfo-1-4.el8_4 | 4_18_0-305_3_1-debuginfo-1-4.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_3_1-debugsource-1-4.el8_4 | 4_18_0-305_3_1-debugsource-1-4.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_7_1-1-3.el8_4 | 4_18_0-305_7_1-1-3.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_7_1-debuginfo-1-3.el8_4 | 4_18_0-305_7_1-debuginfo-1-3.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_7_1-debugsource-1-3.el8_4 | 4_18_0-305_7_1-debugsource-1-3.el8_4 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2021:3436?
The severity of RHSA-2021:3436 is classified as important.
How do I fix RHSA-2021:3436?
To fix RHSA-2021:3436, upgrade the kpatch-patch package to the recommended versions listed in the advisory.
What vulnerability does RHSA-2021:3436 address?
RHSA-2021:3436 addresses a vulnerability that allows KVM guest OS users to cause memory corruption in the host OS, identified by CVE-2021-37576.
Which systems are affected by RHSA-2021:3436?
Systems running specific versions of the kpatch-patch package on Red Hat Enterprise Linux 8 are affected by RHSA-2021:3436.
What is the impact of not addressing RHSA-2021:3436?
Not addressing RHSA-2021:3436 could lead to potential memory corruption in the host system when using KVM.
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