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

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2020:3041-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:3041
Issue date:        2020-07-21
CVE Names:         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 is now available for Red Hat Enterprise Linux 8.0
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 BaseOS E4S (v. 8.0) - aarch64, noarch, ppc64le, s390x, x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

Security Fix(es):

* 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)

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):

* [ESXi][RHEL8.1.0] scsi driver SG list incompatibility (vmw_pvscsi)
(BZ#1839359)

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/):

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 BaseOS E4S (v. 8.0):

Source:
kernel-4.18.0-80.27.1.el8_0.src.rpm

aarch64:
bpftool-4.18.0-80.27.1.el8_0.aarch64.rpm
bpftool-debuginfo-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-core-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-cross-headers-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-debug-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-debug-core-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-debug-debuginfo-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-debug-devel-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-debug-modules-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-debug-modules-extra-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-debuginfo-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-devel-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-headers-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-modules-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-modules-extra-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-tools-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-tools-debuginfo-4.18.0-80.27.1.el8_0.aarch64.rpm
kernel-tools-libs-4.18.0-80.27.1.el8_0.aarch64.rpm
perf-4.18.0-80.27.1.el8_0.aarch64.rpm
perf-debuginfo-4.18.0-80.27.1.el8_0.aarch64.rpm
python3-perf-4.18.0-80.27.1.el8_0.aarch64.rpm
python3-perf-debuginfo-4.18.0-80.27.1.el8_0.aarch64.rpm

noarch:
kernel-abi-whitelists-4.18.0-80.27.1.el8_0.noarch.rpm
kernel-doc-4.18.0-80.27.1.el8_0.noarch.rpm

ppc64le:
bpftool-4.18.0-80.27.1.el8_0.ppc64le.rpm
bpftool-debuginfo-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-core-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-cross-headers-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-debug-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-debug-core-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-debug-devel-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-debug-modules-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-debuginfo-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-devel-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-headers-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-modules-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-modules-extra-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-tools-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-80.27.1.el8_0.ppc64le.rpm
kernel-tools-libs-4.18.0-80.27.1.el8_0.ppc64le.rpm
perf-4.18.0-80.27.1.el8_0.ppc64le.rpm
perf-debuginfo-4.18.0-80.27.1.el8_0.ppc64le.rpm
python3-perf-4.18.0-80.27.1.el8_0.ppc64le.rpm
python3-perf-debuginfo-4.18.0-80.27.1.el8_0.ppc64le.rpm

s390x:
bpftool-4.18.0-80.27.1.el8_0.s390x.rpm
bpftool-debuginfo-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-core-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-cross-headers-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-debug-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-debug-core-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-debug-debuginfo-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-debug-devel-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-debug-modules-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-debug-modules-extra-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-debuginfo-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-devel-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-headers-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-modules-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-modules-extra-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-tools-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-tools-debuginfo-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-zfcpdump-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-zfcpdump-core-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-zfcpdump-devel-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-zfcpdump-modules-4.18.0-80.27.1.el8_0.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-80.27.1.el8_0.s390x.rpm
perf-4.18.0-80.27.1.el8_0.s390x.rpm
perf-debuginfo-4.18.0-80.27.1.el8_0.s390x.rpm
python3-perf-4.18.0-80.27.1.el8_0.s390x.rpm
python3-perf-debuginfo-4.18.0-80.27.1.el8_0.s390x.rpm

x86_64:
bpftool-4.18.0-80.27.1.el8_0.x86_64.rpm
bpftool-debuginfo-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-core-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-cross-headers-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-debug-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-debug-core-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-debug-debuginfo-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-debug-devel-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-debug-modules-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-debug-modules-extra-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-debuginfo-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-devel-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-headers-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-modules-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-modules-extra-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-tools-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-tools-debuginfo-4.18.0-80.27.1.el8_0.x86_64.rpm
kernel-tools-libs-4.18.0-80.27.1.el8_0.x86_64.rpm
perf-4.18.0-80.27.1.el8_0.x86_64.rpm
perf-debuginfo-4.18.0-80.27.1.el8_0.x86_64.rpm
python3-perf-4.18.0-80.27.1.el8_0.x86_64.rpm
python3-perf-debuginfo-4.18.0-80.27.1.el8_0.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-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.
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