7.2 - RHSA-2020:0027

Problem Description:

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