Alerts This Week
Warning Icon 1 1,154
Alerts This Week
Warning Icon 1 1,154

Key Severity Use-After-Free Vulnerability in RHEL 8: RHSA-2020-2567-01

red hat
Calendar Grey June 15, 2020
Dist Redhat Esm H88
A newly released notice for Red Hat Enterprise Linux 8 includes vital updates for the kpatch-patch component containing significant corrections.
An update for kpatch-patch 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

Summary

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body (CVE-2020-12657)
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 software update critical threat Red Hat Enterprise security impact use-after-free kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2020-12657 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: kpatch-patch-4_18_0-193-1-3.el8.src.rpm kpatch-patch-4_18_0-193_1_2-1-1.el8_2.src.rpm
ppc64le: kpatch-patch-4_18_0-193-1-3.el8.ppc64le.rpm kpatch-patch-4_18_0-193-debuginfo-1-3.el8.ppc64le.rpm kpatch-patch-4_18_0-193-debugsource-1-3.el8.ppc64le.rpm kpatch-patch-4_18_0-193_1_2-1-1.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_1_2-debuginfo-1-1.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_1_2-debugsource-1-1.el8_2.ppc64le.rpm
x86_64: kpatch-patch-4_18_0-193-1-3.el8.x86_64.rpm kpatch-patch-4_18_0-193-debuginfo-1-3.el8.x86_64.rpm kpatch-patch-4_18_0-193-debugsource-1-3.el8.x86_64.rpm kpatch-patch-4_18_0-193_1_2-1-1.el8_2.x86_64.rpm kpatch-patch-4_18_0-193_1_2-debuginfo-1-1.el8_2.x86_64.rpm kpatch-patch-4_18_0-193_1_2-debugsource-1-1.el8_2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2567-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2567
Issue date: 2020-06-15

Topic

An update for kpatch-patch 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 software update critical threat Red Hat Enterprise security impact use-after-free kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 8) - ppc64le, x86_64

Bugs Fixed

1832866 - CVE-2020-12657 kernel: use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here