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Red Hat Security Advisory 2019-2867-01

Red Hat Security Advisory 2019-2867-01
Posted Sep 23, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2867-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a buffer overflow vulnerability.

tags | advisory, overflow, kernel
systems | linux, redhat
advisories | CVE-2019-14835
SHA-256 | 343fdcfb34bd36f32d506bd5fcb98fa94281b6239b89c4fb2587ac4197246b32

Red Hat Security Advisory 2019-2867-01

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====================================================================
Red Hat Security Advisory

Synopsis: Important: kernel security update
Advisory ID: RHSA-2019:2867-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2867
Issue date: 2019-09-23
CVE Names: CVE-2019-14835
====================================================================
1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 7.4
Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update
Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP
Solutions.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Server AUS (v. 7.4) - noarch, x86_64
Red Hat Enterprise Linux Server E4S (v. 7.4) - noarch, ppc64le, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64
Red Hat Enterprise Linux Server Optional E4S (v. 7.4) - ppc64le, x86_64
Red Hat Enterprise Linux Server Optional TUS (v. 7.4) - x86_64
Red Hat Enterprise Linux Server TUS (v. 7.4) - noarch, x86_64

3. Description:

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)

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

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

6. Package List:

Red Hat Enterprise Linux Server AUS (v. 7.4):

Source:
kernel-3.10.0-693.59.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-693.59.1.el7.noarch.rpm
kernel-doc-3.10.0-693.59.1.el7.noarch.rpm

x86_64:
kernel-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debug-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.59.1.el7.x86_64.rpm
kernel-devel-3.10.0-693.59.1.el7.x86_64.rpm
kernel-headers-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.59.1.el7.x86_64.rpm
perf-3.10.0-693.59.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
python-perf-3.10.0-693.59.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server E4S (v. 7.4):

Source:
kernel-3.10.0-693.59.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-693.59.1.el7.noarch.rpm
kernel-doc-3.10.0-693.59.1.el7.noarch.rpm

ppc64le:
kernel-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-debug-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-devel-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-headers-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-tools-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-693.59.1.el7.ppc64le.rpm
perf-3.10.0-693.59.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-693.59.1.el7.ppc64le.rpm
python-perf-3.10.0-693.59.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-693.59.1.el7.ppc64le.rpm

x86_64:
kernel-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debug-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.59.1.el7.x86_64.rpm
kernel-devel-3.10.0-693.59.1.el7.x86_64.rpm
kernel-headers-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.59.1.el7.x86_64.rpm
perf-3.10.0-693.59.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
python-perf-3.10.0-693.59.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server TUS (v. 7.4):

Source:
kernel-3.10.0-693.59.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-693.59.1.el7.noarch.rpm
kernel-doc-3.10.0-693.59.1.el7.noarch.rpm

x86_64:
kernel-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debug-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.59.1.el7.x86_64.rpm
kernel-devel-3.10.0-693.59.1.el7.x86_64.rpm
kernel-headers-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.59.1.el7.x86_64.rpm
perf-3.10.0-693.59.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
python-perf-3.10.0-693.59.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 7.4):

x86_64:
kernel-debug-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-693.59.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional E4S (v. 7.4):

ppc64le:
kernel-debug-debuginfo-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-693.59.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-693.59.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-693.59.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-693.59.1.el7.ppc64le.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-693.59.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional TUS (v. 7.4):

x86_64:
kernel-debug-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-693.59.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.59.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.59.1.el7.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
https://access.redhat.com/security/team/key/

7. 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

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2019 Red Hat, Inc.
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