RHSA-2020:2242: Important: kernel-rt security and bug fix update
First published: Wed May 20 2020(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: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (CVE-2017-18595)</li> <li> kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)</li> <li> Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)</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> update the MRG 2.5.z 3.10 realtime-kernel sources (BZ#1823371)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-debug | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-debug-debuginfo | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-debug-devel | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-debuginfo | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-devel | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-doc | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-firmware | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-trace | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-trace-debuginfo | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-trace-devel | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-vanilla | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-vanilla-debuginfo | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
| redhat/kernel-rt-vanilla-devel | <3.10.0-693.67.1.rt56.665.el6 | 3.10.0-693.67.1.rt56.665.el6 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2020:2242?
The severity of RHSA-2020:2242 is considered moderate due to the double free vulnerability in the kernel.
How do I fix RHSA-2020:2242?
To fix RHSA-2020:2242, update your kernel-rt packages to version 3.10.0-693.67.1.rt56.665.el6.
Which packages are affected by RHSA-2020:2242?
The affected packages include kernel-rt, kernel-rt-debug, kernel-rt-debuginfo, and a few others related to the Real Time Kernel.
What specific vulnerability is addressed in RHSA-2020:2242?
RHSA-2020:2242 addresses a double free vulnerability detected in the allocate_trace_buffer function within the kernel.
Is RHSA-2020:2242 applicable to Red Hat Enterprise Linux 6?
Yes, RHSA-2020:2242 is specifically applicable to Red Hat Enterprise Linux 6 systems using Real Time kernel packages.
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