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RedHat: RHSA-2020-4686-01 Important: Kernel-Rt Buffer Overflow Issue

red hat
Calendar Grey November 3, 2020
Dist Redhat Esm H88
Fedora's crucial kernel-rt security patch tackles several vulnerabilities and boosts overall system performance. Discover the details today!
An update for kernel-rt is now available for Red Hat Enterprise Linux 8

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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: net: bluetooth: heap buffer overflow when processing extended advertising report events (CVE-2020-24490)
* kernel: Red Hat only CVE-2020-12351 regression (CVE-2020-25661)
* kernel: Red Hat only CVE-2020-12352 regression (CVE-2020-25662)
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.

Topics%20covered

Topics Covered

security advisory buffer overflow important red hat enterprise kernel-rt real-time kernel

References

https://access.redhat.com/security/cve/CVE-2020-24490 https://access.redhat.com/security/cve/CVE-2020-25661 https://access.redhat.com/security/cve/CVE-2020-25662 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/BleedingTooth

Package List

Red Hat Enterprise Linux Real Time for NFV (v. 8):
Source: kernel-rt-4.18.0-240.1.1.rt7.55.el8_3.src.rpm
x86_64: kernel-rt-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-core-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-debug-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-debug-core-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-debug-devel-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-debug-kvm-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-debug-modules-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-debuginfo-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-devel-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-kvm-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-modules-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-modules-extra-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 8):
Source: kernel-rt-4.18.0-240.1.1.rt7.55.el8_3.src.rpm
x86_64: kernel-rt-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-core-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm kernel-rt-debug-4.18.0-240.1.1.rt7.55.el8_3.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:4686-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4686
Issue date: 2020-11-04

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.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 buffer overflow important red hat enterprise kernel-rt real-time kernel

Relevant Releases Architectures

Red Hat Enterprise Linux Real Time (v. 8) - x86_64

Red Hat Enterprise Linux Real Time for NFV (v. 8) - x86_64

Bugs Fixed

1888449 - CVE-2020-24490 kernel: net: bluetooth: heap buffer overflow when processing extended advertising report events

1891483 - CVE-2020-25661 kernel: Red Hat only CVE-2020-12351 regression

1891484 - CVE-2020-25662 kernel: Red Hat only CVE-2020-12352 regression

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