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RedHat: RHSA-2020-4685-01 Important: Kernel Heap Overflow Security Fix

red hat
Calendar Grey November 4, 2020
Dist Redhat Esm H88
Ubuntu has released a critical security patch for the kernel, affecting several platforms. Ensure your systems remain protected.
An update for kernel 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 packages contain the Linux kernel, the core of any Linux operating system.
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 red hat heap overflow kernel linux important update system reboot

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 BaseOS (v. 8):
Source: kernel-4.18.0-240.1.1.el8_3.src.rpm
aarch64: bpftool-4.18.0-240.1.1.el8_3.aarch64.rpm bpftool-debuginfo-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-core-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-cross-headers-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-debug-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-debug-core-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-debug-debuginfo-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-debug-devel-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-debug-modules-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-debug-modules-extra-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-debuginfo-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-devel-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-headers-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-modules-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-modules-extra-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-tools-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-tools-debuginfo-4.18.0-240.1.1.el8_3.aarch64.rpm kernel-tools-libs-4.18.0-240.1.1.el8_3.aarch64.rpm perf-4.18.0-240.1.1.el8_3.aarch64.rpm perf-debuginfo-4.18.0-240.1.1.el8_3.aarch64.rpm python3-perf-4.18.0-240.1.1.el8_3.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:4685-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4685
Issue date: 2020-11-04

Topic

An update for kernel 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 red hat heap overflow kernel linux important update system reboot

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, 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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