RHSA-2019:3978: Important: kernel-rt security and bug fix update
First published: Tue Nov 26 2019(Updated: )
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.<br>Security Fix(es):<br><li> Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)</li> <li> kernel: local attacker can trigger multiple use-after-free conditions results in privilege escalation (CVE-2019-15239)</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.<br>Bug Fix(es):<br><li> kernel-rt: update to the RHEL7.7.z batch#3 source tree (BZ#1762889)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-debug | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-debug-debuginfo | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-debug-devel | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-debuginfo | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-devel | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-doc | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-trace | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-trace-debuginfo | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-trace-devel | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-debug-kvm | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-debug-kvm-debuginfo | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-kvm | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-kvm-debuginfo | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-trace-kvm | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
| redhat/kernel-rt-trace-kvm-debuginfo | <3.10.0-1062.7.1.rt56.1030.el7 | 3.10.0-1062.7.1.rt56.1030.el7 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of RHSA-2019:3978?
The severity of RHSA-2019:3978 is high due to the potential for out-of-bounds memory access via the mmio ring buffer.
How do I fix RHSA-2019:3978?
To fix RHSA-2019:3978, update the kernel-rt packages to version 3.10.0-1062.7.1.rt56.1030.el7 or later.
What is the impact of RHSA-2019:3978?
The impact of RHSA-2019:3978 allows a local attacker to trigger memory corruption, potentially leading to privilege escalation.
Which systems are affected by RHSA-2019:3978?
Systems running the kernel-rt version below 3.10.0-1062.7.1.rt56.1030.el7 are affected by RHSA-2019:3978.
Is there a specific recommendation for RHSA-2019:3978?
The recommendation for RHSA-2019:3978 is to apply the security patches to ensure system integrity and protect against potential exploits.
- agent/type
- agent/severity
- agent/softwarecombine
- agent/first-publish-date
- agent/last-modified-date
- agent/remedy
- agent/title
- agent/weakness
- agent/description
- collector/redhat-errata
- source/Red Hat
- anchor-id/RHSA-2019:3978
- agent/software-canonical-lookup
- agent/references
- agent/tags
- agent/event
- agent/source
- package-manager/redhat