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Red Hat Security Advisory 2020-0027-01

Red Hat Security Advisory 2020-0027-01
Posted Jan 6, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-0027-01 - 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. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2019-14821, CVE-2019-15239
MD5 | 01b87d8c941f26941553a4bf8b4b632f

Red Hat Security Advisory 2020-0027-01

Change Mirror Download
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====================================================================
Red Hat Security Advisory

Synopsis: Important: kpatch-patch security update
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
CVE Names: CVE-2019-14821 CVE-2019-15239
====================================================================
1. Summary:

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 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.

2. Relevant releases/architectures:

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

3. Description:

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.

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

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

6. 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
kpatch-patch-3_10_0-1062_4_2-1-3.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_4_3-1-3.el7.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/

7. 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

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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