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Red Hat Enterprise Linux 7 RHSA-2021-2727-01 Important Kpatch Security Fix

red hat
Calendar Grey July 20, 2021
Dist Redhat Esm H88
Essential kpatch-patch security enhancement for Red Hat Enterprise Linux resolves key kernel flaws. Discover additional information.
An update is now available for Red Hat Enterprise Linux 7

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: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)
* kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)
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 update kernel security impact threat type kpatch

References

https://access.redhat.com/security/cve/CVE-2021-33034 https://access.redhat.com/security/cve/CVE-2021-33909 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/security/vulnerabilities/RHSB-2021-006

Package List

Red Hat Enterprise Linux Server (v. 7):
Source: kpatch-patch-3_10_0-1160-1-7.el7.src.rpm kpatch-patch-3_10_0-1160_11_1-1-6.el7.src.rpm kpatch-patch-3_10_0-1160_15_2-1-6.el7.src.rpm kpatch-patch-3_10_0-1160_21_1-1-4.el7.src.rpm kpatch-patch-3_10_0-1160_24_1-1-2.el7.src.rpm kpatch-patch-3_10_0-1160_25_1-1-2.el7.src.rpm kpatch-patch-3_10_0-1160_2_1-1-7.el7.src.rpm kpatch-patch-3_10_0-1160_2_2-1-7.el7.src.rpm kpatch-patch-3_10_0-1160_31_1-1-1.el7.src.rpm kpatch-patch-3_10_0-1160_6_1-1-7.el7.src.rpm
ppc64le: kpatch-patch-3_10_0-1160-1-7.el7.ppc64le.rpm kpatch-patch-3_10_0-1160-debuginfo-1-7.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_11_1-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_11_1-debuginfo-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_15_2-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_15_2-debuginfo-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_21_1-1-4.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_21_1-debuginfo-1-4.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_24_1-1-2.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_24_1-debuginfo-1-2.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_25_1-1-2.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_25_1-debuginfo-1-2.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_2_1-1-7.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_2_1-debuginfo-1-7.el7.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2727-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2727
Issue date: 2021-07-20

Topic

An update is now available for Red Hat Enterprise Linux 7.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 update kernel security impact threat type kpatch

Relevant Releases Architectures

Red Hat Enterprise Linux Server (v. 7) - ppc64le, x86_64

Bugs Fixed

1961305 - CVE-2021-33034 kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan

1970273 - CVE-2021-33909 kernel: size_t-to-int conversion vulnerability in the filesystem layer

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