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Red Hat Enterprise Linux 7.6 RHSA-2020:2289-01 Important: Kernel Update

red hat
Calendar Grey May 26, 2020
Dist Redhat Esm H88
The latest Red Hat kernel update is crucial for enhancing security and fixing major bugs in the RHEL 7.6 EUS framework, ensuring system integrity and efficiency
An update for kernel is now available for Red Hat Enterprise Linux 7.6 Extended Update Support

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: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (CVE-2017-18595)
* kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c (CVE-2019-3846)
* kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c (CVE-2019-10126)
* kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)
* Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)
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):
* Observed a memory leak while using dm-multipath (BZ#1812935)
* Backport: Guest microcode version mismatch on secondary processors(BZ#1814001)
* dm-multipath high load backport incorrect (BZ#1814533)
* ixgbe reports "Detected Tx Unit Hang" with adapter reset on RHEL 7 (BZ#1816990)
* RHEL7: block mq hang of a blk_mq_freeze_queue_wait(), which waits for a zero of a q_usage_counter, which never happens (BZ#1824543)

Topics%20covered

Topics Covered

security advisory Red Hat kernel update bug fix important heap overflow memory leak

References

https://access.redhat.com/security/cve/CVE-2017-18595 https://access.redhat.com/security/cve/CVE-2019-3846 https://access.redhat.com/security/cve/CVE-2019-10126 https://access.redhat.com/security/cve/CVE-2019-19768 https://access.redhat.com/security/cve/CVE-2020-10711 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.6):
Source: kernel-3.10.0-957.54.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-957.54.1.el7.noarch.rpm kernel-doc-3.10.0-957.54.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-957.54.1.el7.x86_64.rpm kernel-3.10.0-957.54.1.el7.x86_64.rpm kernel-debug-3.10.0-957.54.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.54.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.54.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.54.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.54.1.el7.x86_64.rpm kernel-devel-3.10.0-957.54.1.el7.x86_64.rpm kernel-headers-3.10.0-957.54.1.el7.x86_64.rpm kernel-tools-3.10.0-957.54.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.54.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.54.1.el7.x86_64.rpm perf-3.10.0-957.54.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.54.1.el7.x86_64.rpm python-perf-3.10.0-957.54.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.54.1.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6):
x86_64: kernel-debug-debuginfo-3.10.0-957.54.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.54.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.54.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.54.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2289-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2289
Issue date: 2020-05-26

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.6Extended Update Support.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 Red Hat kernel update bug fix important heap overflow memory leak

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.6) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - ppc64, ppc64le, x86_64

Bugs Fixed

1713059 - CVE-2019-3846 kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c

1716992 - CVE-2019-10126 kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c

1758671 - CVE-2017-18595 kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c

1786164 - CVE-2019-19768 kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c

1825116 - CVE-2020-10711 Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic

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