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Red Hat 6: RHSA-2021-1288-01 Important: Kernel Security Fixes

red hat
Calendar Grey April 20, 2021
Dist Redhat Esm H88
Critical kernel patch release for Red Hat Enterprise Linux 6 targeting vulnerabilities with advised solutions and measures.
An update for kernel is now available for Red Hat Enterprise Linux 6 Extended Lifecycle 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: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)
* kernel: out-of-bounds read in libiscsi module (CVE-2021-27364)
* kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)
* kernel: increase slab leak leads to DoS (CVE-2021-20265)
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):
* Enable CI and changelog for GitLab workflow (BZ#1930523)

Topics%20covered

Topics Covered

security advisory DoS important heap overflow kernel fix Red Hat Enterprise security impact

References

https://access.redhat.com/security/cve/CVE-2020-29661 https://access.redhat.com/security/cve/CVE-2021-20265 https://access.redhat.com/security/cve/CVE-2021-27364 https://access.redhat.com/security/cve/CVE-2021-27365 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server (v. 6 ELS):
Source: kernel-2.6.32-754.39.1.el6.src.rpm
i386: kernel-2.6.32-754.39.1.el6.i686.rpm kernel-debug-2.6.32-754.39.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.39.1.el6.i686.rpm kernel-debug-devel-2.6.32-754.39.1.el6.i686.rpm kernel-debuginfo-2.6.32-754.39.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.39.1.el6.i686.rpm kernel-devel-2.6.32-754.39.1.el6.i686.rpm kernel-headers-2.6.32-754.39.1.el6.i686.rpm perf-2.6.32-754.39.1.el6.i686.rpm perf-debuginfo-2.6.32-754.39.1.el6.i686.rpm python-perf-debuginfo-2.6.32-754.39.1.el6.i686.rpm
noarch: kernel-abi-whitelists-2.6.32-754.39.1.el6.noarch.rpm kernel-doc-2.6.32-754.39.1.el6.noarch.rpm kernel-firmware-2.6.32-754.39.1.el6.noarch.rpm
s390x: kernel-2.6.32-754.39.1.el6.s390x.rpm kernel-debug-2.6.32-754.39.1.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-754.39.1.el6.s390x.rpm kernel-debug-devel-2.6.32-754.39.1.el6.s390x.rpm kernel-debuginfo-2.6.32-754.39.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-754.39.1.el6.s390x.rpm kernel-devel-2.6.32-754.39.1.el6.s390x.rpm kernel-headers-2.6.32-754.39.1.el6.s390x.rpm kernel-kdump-2.6.32-754.39.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-754.39.1.el6.s390x.rpm kernel-kdump-devel-2.6.32-754.39.1.el6.s390x.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:1288-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1288
Issue date: 2021-04-20

Topic

An update for kernel is now available for Red Hat Enterprise Linux 6Extended Lifecycle 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 DoS important heap overflow kernel fix Red Hat Enterprise security impact

Relevant Releases Architectures

Red Hat Enterprise Linux Server (v. 6 ELS) - i386, noarch, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6 ELS) - i386, s390x, x86_64

Bugs Fixed

1906525 - CVE-2020-29661 kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free

1908827 - CVE-2021-20265 kernel: increase slab leak leads to DoS

1930078 - CVE-2021-27365 kernel: heap buffer overflow in the iSCSI subsystem

1930080 - CVE-2021-27364 kernel: out-of-bounds read in libiscsi module

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