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RedHat: RHSA-2020-0698-01 Important: kpatch-patch Use-After-Free Fix

red hat
Calendar Grey March 3, 2020
Dist Redhat Esm H88
Oracle has released a critical database security patch to fix an out-of-bounds vulnerability in its data management software.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 7.6 Extended Update Support

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

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 __blk_drain_queue() function in block/blk-core.c (CVE-2018-20856)
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 security update kernel patch important red hat enterprise use-after-free kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2018-20856 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server EUS (v. 7.6):
Source: kpatch-patch-3_10_0-957_35_1-1-6.el7.src.rpm kpatch-patch-3_10_0-957_35_2-1-5.el7.src.rpm kpatch-patch-3_10_0-957_38_1-1-4.el7.src.rpm kpatch-patch-3_10_0-957_38_2-1-3.el7.src.rpm kpatch-patch-3_10_0-957_38_3-1-3.el7.src.rpm kpatch-patch-3_10_0-957_41_1-1-1.el7.src.rpm kpatch-patch-3_10_0-957_43_1-1-1.el7.src.rpm
ppc64le: kpatch-patch-3_10_0-957_35_1-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-957_35_1-debuginfo-1-6.el7.ppc64le.rpm kpatch-patch-3_10_0-957_35_2-1-5.el7.ppc64le.rpm kpatch-patch-3_10_0-957_35_2-debuginfo-1-5.el7.ppc64le.rpm kpatch-patch-3_10_0-957_38_1-1-4.el7.ppc64le.rpm kpatch-patch-3_10_0-957_38_1-debuginfo-1-4.el7.ppc64le.rpm kpatch-patch-3_10_0-957_38_2-1-3.el7.ppc64le.rpm kpatch-patch-3_10_0-957_38_3-1-3.el7.ppc64le.rpm kpatch-patch-3_10_0-957_41_1-1-1.el7.ppc64le.rpm kpatch-patch-3_10_0-957_43_1-1-1.el7.ppc64le.rpm
x86_64: kpatch-patch-3_10_0-957_35_1-1-6.el7.x86_64.rpm kpatch-patch-3_10_0-957_35_1-debuginfo-1-6.el7.x86_64.rpm kpatch-patch-3_10_0-957_35_2-1-5.el7.x86_64.rpm kpatch-patch-3_10_0-957_35_2-debuginfo-1-5.el7.x86_64.rpm kpatch-patch-3_10_0-957_38_1-1-4.el7.x86_64.rpm kpatch-patch-3_10_0-957_38_1-debuginfo-1-4.el7.x86_64.rpm kpatch-patch-3_10_0-957_38_2-1-3.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:0698-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0698
Issue date: 2020-03-03

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux7.6 Extended Update Support.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 security update kernel patch important red hat enterprise use-after-free kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux Server EUS (v. 7.6) - ppc64le, x86_64

Bugs Fixed

1738705 - CVE-2018-20856 kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c

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