RHSA-2021:1288: Important: kernel security and bug fix update

Published Apr 20, 2021
·
Updated

The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: locking issue in drivers/tty/ttyjobctrl.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)

Affected Software

30 affected componentsFixes available
redhat/kernel<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-abi-whitelists<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-debug<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-debug-debuginfo<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-debug-debuginfo<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-debug-devel<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-debug-devel<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-debuginfo<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-debuginfo<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-debuginfo-common-i686<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-devel<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-doc<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-firmware<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-headers<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/perf<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/perf-debuginfo<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/perf-debuginfo<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/python-perf<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/python-perf-debuginfo<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/python-perf-debuginfo<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-debug<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-devel<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-headers<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/perf<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/python-perf<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-debuginfo-common-s390x<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-kdump<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-kdump-debuginfo<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6
redhat/kernel-kdump-devel<2.6.32-754.39.1.el6
2.6.32-754.39.1.el6

Remediation

Event History

May 24, 2026
Advisory Published
via Red Hat·06:05 PM
Data Sourced
via Red Hat·06:05 PM
RemedyDescriptionAffected Software
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Frequently Asked Questions

1

What is the severity of RHSA-2021:1288?

RHSA-2021:1288 has been classified with high severity due to vulnerabilities that could lead to exploitation.

2

How do I fix RHSA-2021:1288?

To fix RHSA-2021:1288, update the affected kernel packages to version 2.6.32-754.39.1.el6 or later.

3

What vulnerabilities are addressed in RHSA-2021:1288?

RHSA-2021:1288 addresses a use-after-free vulnerability and an out-of-bounds read in the Linux kernel.

4

What Linux kernel versions are affected by RHSA-2021:1288?

RHSA-2021:1288 affects all kernel versions prior to 2.6.32-754.39.1.el6.

5

Is RHSA-2021:1288 applicable to all Red Hat systems?

RHSA-2021:1288 is applicable specifically to Red Hat Enterprise Linux 6.

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