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Red Hat Enterprise Linux 7: RHSA-2020-0027-01 Important: kpatch-patch DoS

red hat
Calendar Grey January 6, 2020
Dist Redhat Esm H88
Key revision regarding kpatch-patch in Red Hat Enterprise Linux 7 tackles major security issues affecting the user base.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 7

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

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: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)
* kernel: local attacker can trigger multiple use-after-free conditions results in privilege escalation (CVE-2019-15239)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgements, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat privilege escalation DoS important kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2019-14821 https://access.redhat.com/security/cve/CVE-2019-15239 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server (v. 7):
Source: kpatch-patch-3_10_0-1062-1-11.el7.src.rpm kpatch-patch-3_10_0-1062_1_1-1-10.el7.src.rpm kpatch-patch-3_10_0-1062_1_2-1-9.el7.src.rpm kpatch-patch-3_10_0-1062_4_1-1-6.el7.src.rpm kpatch-patch-3_10_0-1062_4_2-1-3.el7.src.rpm kpatch-patch-3_10_0-1062_4_3-1-3.el7.src.rpm
ppc64le: kpatch-patch-3_10_0-1062-1-11.el7.ppc64le.rpm kpatch-patch-3_10_0-1062-debuginfo-1-11.el7.ppc64le.rpm kpatch-patch-3_10_0-1062_1_1-1-10.el7.ppc64le.rpm kpatch-patch-3_10_0-1062_1_1-debuginfo-1-10.el7.ppc64le.rpm kpatch-patch-3_10_0-1062_1_2-1-9.el7.ppc64le.rpm kpatch-patch-3_10_0-1062_1_2-debuginfo-1-9.el7.ppc64le.rpm kpatch-patch-3_10_0-1062_4_1-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-1062_4_1-debuginfo-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-1062_4_2-1-3.el7.ppc64le.rpm kpatch-patch-3_10_0-1062_4_3-1-3.el7.ppc64le.rpm
x86_64: kpatch-patch-3_10_0-1062-1-11.el7.x86_64.rpm kpatch-patch-3_10_0-1062-debuginfo-1-11.el7.x86_64.rpm kpatch-patch-3_10_0-1062_1_1-1-10.el7.x86_64.rpm kpatch-patch-3_10_0-1062_1_1-debuginfo-1-10.el7.x86_64.rpm kpatch-patch-3_10_0-1062_1_2-1-9.el7.x86_64.rpm kpatch-patch-3_10_0-1062_1_2-debuginfo-1-9.el7.x86_64.rpm kpatch-patch-3_10_0-1062_4_1-1-6.el7.x86_64.rpm kpatch-patch-3_10_0-1062_4_1-debuginfo-1-6.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:0027-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0027
Issue date: 2020-01-06

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux 7.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.

Topics%20covered

Topics Covered

security advisory Red Hat privilege escalation DoS important kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux Server (v. 7) - ppc64le, x86_64

Bugs Fixed

1746708 - CVE-2019-14821 Kernel: KVM: OOB memory access via mmio ring buffer

1747353 - CVE-2019-15239 kernel: local attacker can trigger multiple use-after-free conditions results in privilege escalation

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