Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 569
Alerts This Week
Warning Icon 1 569

RedHat: RHSA-2019-2827-01 Important: Kernel Buffer Overflow Threat

red hat
Calendar Grey September 20, 2019
Dist Redhat Esm H88
Crucial kernel security patch for Red Hat Enterprise Linux 8 targets a memory overflow vulnerability to improve overall system defense.
An update for kernel 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

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)

Topics%20covered

Topics Covered

security advisory buffer overflow red hat threat important kernel

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 BaseOS (v. 8):
Source: kernel-4.18.0-80.11.2.el8_0.src.rpm
aarch64: bpftool-4.18.0-80.11.2.el8_0.aarch64.rpm bpftool-debuginfo-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-core-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-cross-headers-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-debug-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-debug-core-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-debug-debuginfo-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-debug-devel-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-debug-modules-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-debug-modules-extra-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-debuginfo-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-devel-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-headers-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-modules-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-modules-extra-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-tools-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-tools-debuginfo-4.18.0-80.11.2.el8_0.aarch64.rpm kernel-tools-libs-4.18.0-80.11.2.el8_0.aarch64.rpm perf-4.18.0-80.11.2.el8_0.aarch64.rpm perf-debuginfo-4.18.0-80.11.2.el8_0.aarch64.rpm python3-perf-4.18.0-80.11.2.el8_0.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:2827-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2827
Issue date: 2019-09-20

Topic

An update for kernel 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 buffer overflow red hat threat important kernel

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

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

Get the latest News and Insights

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