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Red Hat Security Advisory 2019-2864-01

Red Hat Security Advisory 2019-2864-01
Posted Sep 23, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2864-01 - 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 | 9c7e9c01f4fcf7c8c0f670b7cc0101ade0f73202de2050a085bb20d19a25525c

Red Hat Security Advisory 2019-2864-01

Change Mirror Download
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Hash: SHA256

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

Synopsis: Important: kernel security update
Advisory ID: RHSA-2019:2864-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2864
Issue date: 2019-09-23
CVE Names: CVE-2019-14835
====================================================================
1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 7.6
Extended Update Support.

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 ComputeNode EUS (v. 7.6) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.6) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - ppc64, ppc64le, 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 ComputeNode EUS (v. 7.6):

Source:
kernel-3.10.0-957.35.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-957.35.2.el7.noarch.rpm
kernel-doc-3.10.0-957.35.2.el7.noarch.rpm

x86_64:
bpftool-3.10.0-957.35.2.el7.x86_64.rpm
kernel-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debug-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.35.2.el7.x86_64.rpm
kernel-devel-3.10.0-957.35.2.el7.x86_64.rpm
kernel-headers-3.10.0-957.35.2.el7.x86_64.rpm
kernel-tools-3.10.0-957.35.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-957.35.2.el7.x86_64.rpm
perf-3.10.0-957.35.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
python-perf-3.10.0-957.35.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6):

x86_64:
kernel-debug-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.35.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-957.35.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 7.6):

Source:
kernel-3.10.0-957.35.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-957.35.2.el7.noarch.rpm
kernel-doc-3.10.0-957.35.2.el7.noarch.rpm

ppc64:
kernel-3.10.0-957.35.2.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-957.35.2.el7.ppc64.rpm
kernel-debug-3.10.0-957.35.2.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-957.35.2.el7.ppc64.rpm
kernel-debug-devel-3.10.0-957.35.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-957.35.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-957.35.2.el7.ppc64.rpm
kernel-devel-3.10.0-957.35.2.el7.ppc64.rpm
kernel-headers-3.10.0-957.35.2.el7.ppc64.rpm
kernel-tools-3.10.0-957.35.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-957.35.2.el7.ppc64.rpm
kernel-tools-libs-3.10.0-957.35.2.el7.ppc64.rpm
perf-3.10.0-957.35.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-957.35.2.el7.ppc64.rpm
python-perf-3.10.0-957.35.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-957.35.2.el7.ppc64.rpm

ppc64le:
kernel-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-debug-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-devel-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-headers-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-tools-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-957.35.2.el7.ppc64le.rpm
perf-3.10.0-957.35.2.el7.ppc64le.rpm
perf-debuginfo-3.10.0-957.35.2.el7.ppc64le.rpm
python-perf-3.10.0-957.35.2.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-957.35.2.el7.ppc64le.rpm

s390x:
kernel-3.10.0-957.35.2.el7.s390x.rpm
kernel-debug-3.10.0-957.35.2.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-957.35.2.el7.s390x.rpm
kernel-debug-devel-3.10.0-957.35.2.el7.s390x.rpm
kernel-debuginfo-3.10.0-957.35.2.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-957.35.2.el7.s390x.rpm
kernel-devel-3.10.0-957.35.2.el7.s390x.rpm
kernel-headers-3.10.0-957.35.2.el7.s390x.rpm
kernel-kdump-3.10.0-957.35.2.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-957.35.2.el7.s390x.rpm
kernel-kdump-devel-3.10.0-957.35.2.el7.s390x.rpm
perf-3.10.0-957.35.2.el7.s390x.rpm
perf-debuginfo-3.10.0-957.35.2.el7.s390x.rpm
python-perf-3.10.0-957.35.2.el7.s390x.rpm
python-perf-debuginfo-3.10.0-957.35.2.el7.s390x.rpm

x86_64:
bpftool-3.10.0-957.35.2.el7.x86_64.rpm
kernel-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debug-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.35.2.el7.x86_64.rpm
kernel-devel-3.10.0-957.35.2.el7.x86_64.rpm
kernel-headers-3.10.0-957.35.2.el7.x86_64.rpm
kernel-tools-3.10.0-957.35.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-957.35.2.el7.x86_64.rpm
perf-3.10.0-957.35.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
python-perf-3.10.0-957.35.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 7.6):

ppc64:
kernel-debug-debuginfo-3.10.0-957.35.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-957.35.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-957.35.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-957.35.2.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-957.35.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-957.35.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-957.35.2.el7.ppc64.rpm

ppc64le:
kernel-debug-debuginfo-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-957.35.2.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-957.35.2.el7.ppc64le.rpm
perf-debuginfo-3.10.0-957.35.2.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-957.35.2.el7.ppc64le.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.35.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-957.35.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.35.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.35.2.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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