What is the severity of RHSA-2021:1070?

RHSA-2021:1070 has significant severity due to vulnerabilities including an out-of-bounds read and a heap buffer overflow in the kernel-rt packages.

How do I fix RHSA-2021:1070?

To fix RHSA-2021:1070, update the kernel-rt packages to version 3.10.0-1160.24.1.rt56.1161.el7 or later.

What vulnerabilities are addressed in RHSA-2021:1070?

RHSA-2021:1070 addresses vulnerabilities including CVE-2021-27364 related to out-of-bounds read and a heap buffer overflow in the libiscsi module.

Which packages are affected by RHSA-2021:1070?

The affected packages in RHSA-2021:1070 include kernel-rt, kernel-rt-debug, kernel-rt-kvm, and their respective debug and development packages.

What systems are impacted by RHSA-2021:1070?

RHSA-2021:1070 impacts systems using Red Hat Enterprise Linux 7 with real-time kernel configurations.

Vulnerability/
RHSA-2021:1070

CWE

119

6/4/2021

RHSA-2021:1070: Important: kernel-rt security and bug fix update

First published: Tue Apr 06 2021(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: out-of-bounds read in libiscsi module (CVE-2021-27364)</li> <li> kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)</li> <li> kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363)</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> RHEL7.9 Realtime crashes due to a blocked task detection. The blocked task is stuck in unregister_shrinker() where multiple tasks have taken the shrinker_rwsem and are fighting on a dentry's d_lockref lock rt_mutex. [kernel-rt] (BZ#1935557)</li> <li> kernel-rt: update to the latest RHEL7.9.z5 source tree (BZ#1939220)</li>

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Reference Links

Frequently Asked Questions

What is the severity of RHSA-2021:1070?
RHSA-2021:1070 has significant severity due to vulnerabilities including an out-of-bounds read and a heap buffer overflow in the kernel-rt packages.
How do I fix RHSA-2021:1070?
To fix RHSA-2021:1070, update the kernel-rt packages to version 3.10.0-1160.24.1.rt56.1161.el7 or later.
What vulnerabilities are addressed in RHSA-2021:1070?
RHSA-2021:1070 addresses vulnerabilities including CVE-2021-27364 related to out-of-bounds read and a heap buffer overflow in the libiscsi module.
Which packages are affected by RHSA-2021:1070?
The affected packages in RHSA-2021:1070 include kernel-rt, kernel-rt-debug, kernel-rt-kvm, and their respective debug and development packages.
What systems are impacted by RHSA-2021:1070?
RHSA-2021:1070 impacts systems using Red Hat Enterprise Linux 7 with real-time kernel configurations.

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