-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

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

Synopsis:          Important: kernel-rt security and bug fix update
Advisory ID:       RHSA-2020:3016-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:3016
Issue date:        2020-07-21
CVE Names:         CVE-2019-3016 CVE-2019-19807 CVE-2020-10757
                   CVE-2020-10766 CVE-2020-10767 CVE-2020-10768
                   CVE-2020-12653 CVE-2020-12654 CVE-2020-12888
====================================================================
1. Summary:

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.

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 Real Time (v. 8) - x86_64
Red Hat Enterprise Linux Real Time for NFV (v. 8) - x86_64

3. Description:

The kernel-rt packages provide the Real Time Linux Kernel, which enables
fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: use-after-free in sound/core/timer.c (CVE-2019-19807)

* kernel: kernel: DAX hugepages not considered during mremap
(CVE-2020-10757)

* kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug
allows an attacker to turn off the SSBD protection. (CVE-2020-10766)

* kernel: Indirect Branch Prediction Barrier is force-disabled when STIBP
is unavailable or enhanced IBRS is available. (CVE-2020-10767)

* kernel: Indirect branch speculation can be enabled after it was
force-disabled by the PR_SPEC_FORCE_DISABLE prctl command. (CVE-2020-10768)

* kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in
drivers/net/wireless/marvell/mwifiex/scan.c (CVE-2020-12653)

* kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function
in drivers/net/wireless/marvell/mwifiex/wmm.c (CVE-2020-12654)

* Kernel: vfio: access to disabled MMIO space of some devices may lead to
DoS scenario (CVE-2020-12888)

* kernel: kvm: Information leak within a KVM guest (CVE-2019-3016)

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

Bug Fix(es):

* kernel-rt: update RT source tree to the RHEL-8.2.z2 source tree
(BZ#1829582)

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/):

1786078 - CVE-2019-19807 kernel: use-after-free in sound/core/timer.c
1792167 - CVE-2019-3016 kernel: kvm: Information leak within a KVM guest
1831868 - CVE-2020-12653 kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in drivers/net/wireless/marvell/mwifiex/scan.c
1832530 - CVE-2020-12654 kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in drivers/net/wireless/marvell/mwifiex/wmm.c
1836244 - CVE-2020-12888 Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario
1842525 - CVE-2020-10757 kernel: kernel: DAX hugepages not considered during mremap
1845840 - CVE-2020-10766 kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the SSBD protection.
1845867 - CVE-2020-10767 kernel: Indirect Branch Prediction Barrier is force-disabled when STIBP is unavailable or enhanced IBRS is available.
1845868 - CVE-2020-10768 kernel: Indirect branch speculation can be enabled after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command.

6. Package List:

Red Hat Enterprise Linux Real Time for NFV (v. 8):

Source:
kernel-rt-4.18.0-193.13.2.rt13.65.el8_2.src.rpm

x86_64:
kernel-rt-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-core-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-core-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-devel-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-kvm-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-modules-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debuginfo-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-devel-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-kvm-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-modules-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-modules-extra-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm

Red Hat Enterprise Linux Real Time (v. 8):

Source:
kernel-rt-4.18.0-193.13.2.rt13.65.el8_2.src.rpm

x86_64:
kernel-rt-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-core-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-core-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-devel-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-modules-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debuginfo-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-devel-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-modules-4.18.0-193.13.2.rt13.65.el8_2.x86_64.rpm
kernel-rt-modules-extra-4.18.0-193.13.2.rt13.65.el8_2.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-2019-3016
https://access.redhat.com/security/cve/CVE-2019-19807
https://access.redhat.com/security/cve/CVE-2020-10757
https://access.redhat.com/security/cve/CVE-2020-10766
https://access.redhat.com/security/cve/CVE-2020-10767
https://access.redhat.com/security/cve/CVE-2020-10768
https://access.redhat.com/security/cve/CVE-2020-12653
https://access.redhat.com/security/cve/CVE-2020-12654
https://access.redhat.com/security/cve/CVE-2020-12888
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2020 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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wpvt
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce