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Red Hat Enterprise Linux 7: RHSA-2020-2664-01 Important Kernel Update

red hat
Calendar Grey June 23, 2020
Dist Redhat Esm H88
Suse unveils major system patch focused on crucial vulnerabilities and performance enhancements, featuring improvements to combat DDoS threats.
An update for kernel is now available for Red Hat Enterprise Linux 7

Solution

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

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

The system must be rebooted for this update to take effect.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)
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.
Bug Fix(es):
* kernel: hw: provide reporting and microcode mitigation toggle for CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1827187)
* kernel BUG at fs/fscache/operation.c:70! FS-Cache: 4 == 5 is false - current state is FSCACHE_OP_ST_COMPLETE but should be FSCACHE_OP_CANCELLED in fscache_enqueue_operation (BZ#1839757)
* Deadlock condition grabbing ssb_state lock (BZ#1841121)

Topics%20covered

Topics Covered

security advisory DoS issue kernel fix Red Hat Enterprise important update

References

https://access.redhat.com/security/cve/CVE-2020-12888 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/solutions/5142691

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: kernel-3.10.0-1127.13.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-1127.13.1.el7.noarch.rpm kernel-doc-3.10.0-1127.13.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-1127.13.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm kernel-3.10.0-1127.13.1.el7.x86_64.rpm kernel-debug-3.10.0-1127.13.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1127.13.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1127.13.1.el7.x86_64.rpm kernel-devel-3.10.0-1127.13.1.el7.x86_64.rpm kernel-headers-3.10.0-1127.13.1.el7.x86_64.rpm kernel-tools-3.10.0-1127.13.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1127.13.1.el7.x86_64.rpm perf-3.10.0-1127.13.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm python-perf-3.10.0-1127.13.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: bpftool-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1127.13.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2664-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2664
Issue date: 2020-06-23

Topic

An update for kernel 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 DoS issue kernel fix Red Hat Enterprise important update

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1836244 - CVE-2020-12888 Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario

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