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RedHat Enterprise Linux 6.5: RHSA-2019-2901 Important: Buffer Overflow Fix

red hat
Calendar Grey September 25, 2019
Dist Redhat Esm H88
Ubuntu publishes a vital kernel security patch for 18.04 LTS targeting significant vulnerabilities and enhancing overall performance.
An update for kernel is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support

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):
* A buffer overflow flaw was found in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host. (CVE-2019-14835)
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 buffer overflow Red Hat Enterprise Linux kernel important update

References

https://access.redhat.com/security/cve/CVE-2019-14835 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/kernel-vhost

Package List

Red Hat Enterprise Linux Server AUS (v. 6.5):
Source: kernel-2.6.32-431.96.2.el6.src.rpm
noarch: kernel-abi-whitelists-2.6.32-431.96.2.el6.noarch.rpm kernel-doc-2.6.32-431.96.2.el6.noarch.rpm kernel-firmware-2.6.32-431.96.2.el6.noarch.rpm
x86_64: kernel-2.6.32-431.96.2.el6.x86_64.rpm kernel-debug-2.6.32-431.96.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-431.96.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-431.96.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.96.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.96.2.el6.x86_64.rpm kernel-devel-2.6.32-431.96.2.el6.x86_64.rpm kernel-headers-2.6.32-431.96.2.el6.x86_64.rpm perf-2.6.32-431.96.2.el6.x86_64.rpm perf-debuginfo-2.6.32-431.96.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.96.2.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.5):
Source: kernel-2.6.32-431.96.2.el6.src.rpm
x86_64: kernel-debug-debuginfo-2.6.32-431.96.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.96.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.96.2.el6.x86_64.rpm perf-debuginfo-2.6.32-431.96.2.el6.x86_64.rpm python-perf-2.6.32-431.96.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.96.2.el6.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

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:2901-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2901
Issue date: 2019-09-25

Topic

An update for kernel is now available for Red Hat Enterprise Linux 6.5Advanced 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 buffer overflow Red Hat Enterprise Linux kernel important update

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 6.5) - noarch, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64

Bugs Fixed

1750727 - CVE-2019-14835 kernel: vhost-net: guest to host kernel escape during migration

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