ESB-2019.0246 - [RedHat] kernel-alt: Denial of service - Existing account 2019-01-30

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0246
      Moderate: kernel-alt security, bug fix, and enhancement update
                              30 January 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           kernel-alt
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 7
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-10840  

Reference:         ESB-2018.2515.3

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2019:0162

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

Synopsis:          Moderate: kernel-alt security, bug fix, and enhancement update
Advisory ID:       RHSA-2019:0162-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2019:0162
Issue date:        2019-01-29
CVE Names:         CVE-2018-10840 
=====================================================================

1. Summary:

An update for kernel-alt is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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 for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, noarch, ppc64le, s390x
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le

3. Description:

The kernel-alt packages provide the Linux kernel version 4.x.

Security Fix(es):

* kernel: Heap-based buffer overflow in
fs/ext4/xattr.c:ext4_xattr_set_entry() with crafted ext4 image
(CVE-2018-10840)

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

Bug Fix(es):

These updated kernel-alt packages include also numerous bug fixes and
enhancements. Space precludes documenting all of the bug fixes in this
advisory. See the descriptions in the related Knowledge Article:
https://access.redhat.com/articles/3824202

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/):

1582346 - CVE-2018-10840 kernel: Heap-based buffer overflow in fs/ext4/xattr.c:ext4_xattr_set_entry() with crafted ext4 image

6. Package List:

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):

Source:
kernel-alt-4.14.0-115.5.1.el7a.src.rpm

aarch64:
kernel-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-debug-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-debug-debuginfo-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-debug-devel-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-devel-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-headers-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-tools-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-tools-libs-4.14.0-115.5.1.el7a.aarch64.rpm
perf-4.14.0-115.5.1.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.5.1.el7a.aarch64.rpm
python-perf-4.14.0-115.5.1.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.5.1.el7a.aarch64.rpm

noarch:
kernel-abi-whitelists-4.14.0-115.5.1.el7a.noarch.rpm
kernel-doc-4.14.0-115.5.1.el7a.noarch.rpm

ppc64le:
kernel-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-bootwrapper-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-debug-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-debug-debuginfo-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-devel-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-headers-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-tools-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-tools-libs-4.14.0-115.5.1.el7a.ppc64le.rpm
perf-4.14.0-115.5.1.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.5.1.el7a.ppc64le.rpm
python-perf-4.14.0-115.5.1.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.5.1.el7a.ppc64le.rpm

s390x:
kernel-4.14.0-115.5.1.el7a.s390x.rpm
kernel-debug-4.14.0-115.5.1.el7a.s390x.rpm
kernel-debug-debuginfo-4.14.0-115.5.1.el7a.s390x.rpm
kernel-debug-devel-4.14.0-115.5.1.el7a.s390x.rpm
kernel-debuginfo-4.14.0-115.5.1.el7a.s390x.rpm
kernel-debuginfo-common-s390x-4.14.0-115.5.1.el7a.s390x.rpm
kernel-devel-4.14.0-115.5.1.el7a.s390x.rpm
kernel-headers-4.14.0-115.5.1.el7a.s390x.rpm
kernel-kdump-4.14.0-115.5.1.el7a.s390x.rpm
kernel-kdump-debuginfo-4.14.0-115.5.1.el7a.s390x.rpm
kernel-kdump-devel-4.14.0-115.5.1.el7a.s390x.rpm
perf-4.14.0-115.5.1.el7a.s390x.rpm
perf-debuginfo-4.14.0-115.5.1.el7a.s390x.rpm
python-perf-4.14.0-115.5.1.el7a.s390x.rpm
python-perf-debuginfo-4.14.0-115.5.1.el7a.s390x.rpm

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):

aarch64:
kernel-debug-debuginfo-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.5.1.el7a.aarch64.rpm
kernel-tools-libs-devel-4.14.0-115.5.1.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.5.1.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.5.1.el7a.aarch64.rpm

noarch:
kernel-doc-4.14.0-115.5.1.el7a.noarch.rpm

ppc64le:
kernel-debug-debuginfo-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-debug-devel-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.5.1.el7a.ppc64le.rpm
kernel-tools-libs-devel-4.14.0-115.5.1.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.5.1.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.5.1.el7a.ppc64le.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-2018-10840
https://access.redhat.com/security/updates/classification/#moderate

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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