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Important Kernel Security Patch for Red Hat 6 CVE-2019-14821 OOB Access

red hat
Calendar Grey December 17, 2019
Dist Redhat Esm H88
Ubuntu announces a significant patch for the Linux kernel to address a critical buffer overflow vulnerability, CVE-2021-3156, impacting 20.04 LTS.
An update for kernel is now available for Red Hat Enterprise Linux 6

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: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)
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.
Bug Fix(es):
* KEYS: prevent creating a different user's keyrings RHEL-6.10 (BZ#1537371)
* BUG: unable to handle kernel NULL pointer dereference at (null) (BZ#1733760)
* long I/O stalls with bnx2fc from not masking off scope bits of retry delay value (BZ#1749512)

Topics%20covered

Topics Covered

security advisory Red Hat important kernel OOB access cve-2019-14821

References

https://access.redhat.com/security/cve/CVE-2019-14821 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: kernel-2.6.32-754.25.1.el6.src.rpm
i386: kernel-2.6.32-754.25.1.el6.i686.rpm kernel-debug-2.6.32-754.25.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.25.1.el6.i686.rpm kernel-debug-devel-2.6.32-754.25.1.el6.i686.rpm kernel-debuginfo-2.6.32-754.25.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.25.1.el6.i686.rpm kernel-devel-2.6.32-754.25.1.el6.i686.rpm kernel-headers-2.6.32-754.25.1.el6.i686.rpm perf-2.6.32-754.25.1.el6.i686.rpm perf-debuginfo-2.6.32-754.25.1.el6.i686.rpm python-perf-debuginfo-2.6.32-754.25.1.el6.i686.rpm
noarch: kernel-abi-whitelists-2.6.32-754.25.1.el6.noarch.rpm kernel-doc-2.6.32-754.25.1.el6.noarch.rpm kernel-firmware-2.6.32-754.25.1.el6.noarch.rpm
x86_64: kernel-2.6.32-754.25.1.el6.x86_64.rpm kernel-debug-2.6.32-754.25.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-754.25.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.25.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-754.25.1.el6.i686.rpm kernel-debug-devel-2.6.32-754.25.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.25.1.el6.i686.rpm kernel-debuginfo-2.6.32-754.25.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-754.25.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-754.25.1.el6.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:4256-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:4256
Issue date: 2019-12-17

Topic

An update for kernel is now available for Red Hat Enterprise Linux 6.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 important kernel OOB access cve-2019-14821

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

1746708 - CVE-2019-14821 Kernel: KVM: OOB memory access via mmio ring buffer

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