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Red Hat Enterprise Linux: RHSA-2019-2863-01 Critical: Buffer Overflow

red hat
Calendar Grey September 23, 2019
Dist Redhat Esm H88
Essential kernel patch for Red Hat Enterprise Linux 6 resolves significant security vulnerabilities, such as stack overflow.
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):
* 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 Enterprise Linux important kernel security impact

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 Desktop (v. 6):
Source: kernel-2.6.32-754.23.1.el6.src.rpm
i386: kernel-2.6.32-754.23.1.el6.i686.rpm kernel-debug-2.6.32-754.23.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.23.1.el6.i686.rpm kernel-debug-devel-2.6.32-754.23.1.el6.i686.rpm kernel-debuginfo-2.6.32-754.23.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.23.1.el6.i686.rpm kernel-devel-2.6.32-754.23.1.el6.i686.rpm kernel-headers-2.6.32-754.23.1.el6.i686.rpm perf-2.6.32-754.23.1.el6.i686.rpm perf-debuginfo-2.6.32-754.23.1.el6.i686.rpm python-perf-debuginfo-2.6.32-754.23.1.el6.i686.rpm
noarch: kernel-abi-whitelists-2.6.32-754.23.1.el6.noarch.rpm kernel-doc-2.6.32-754.23.1.el6.noarch.rpm kernel-firmware-2.6.32-754.23.1.el6.noarch.rpm
x86_64: kernel-2.6.32-754.23.1.el6.x86_64.rpm kernel-debug-2.6.32-754.23.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-754.23.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.23.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-754.23.1.el6.i686.rpm kernel-debug-devel-2.6.32-754.23.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.23.1.el6.i686.rpm kernel-debuginfo-2.6.32-754.23.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-754.23.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-754.23.1.el6.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:2863-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2863
Issue date: 2019-09-23

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 buffer overflow Red Hat Enterprise Linux important kernel security impact

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

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

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