Protect yourself against future threats.
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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.2497
kernel security, bug fix, and enhancement update
22 July 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 8
Red Hat Enterprise Linux WS/Desktop 8
Impact/Access: Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Remote with User Interaction
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-12888 CVE-2020-12654 CVE-2020-12653
CVE-2020-10768 CVE-2020-10767 CVE-2020-10766
CVE-2020-10757 CVE-2019-19807 CVE-2019-3016
Reference: ESB-2020.2330
ESB-2020.2180
ESB-2020.0945
Original Bulletin:
https://access.redhat.com/errata/RHSA-2020:3010
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=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security, bug fix, and enhancement update
Advisory ID: RHSA-2020:3010-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3010
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 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 CodeReady Linux Builder (v. 8) - aarch64, ppc64le, x86_64
Red Hat Enterprise Linux BaseOS (v. 8) - 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: 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):
* [FJ8.2 Bug]: kernel: retrieving process core dump of the init process
(PID 1) fails (BZ#1821378)
* [FJ8.0 Bug]: System hungs up after setting parameters for hugepages
(BZ#1835789)
* RHEL8.2 Alpha - ISST-LTE:PowerVM: vNIC DLPAR crashes the LPAR (ibmvnic)
(BZ#1836229)
* "[sig-network] Services should be rejected when no endpoints exist" test
fails frequently on RHEL8 nodes (BZ#1836302)
* RHEL8.2 Beta - RHEL8.2 reports EEH errors on internal SAS adapter during
HTX run on PMEM (SCM/pmem) (BZ#1842406)
* RHEL8.1 - s390/cio: fix virtio-ccw DMA without PV (BZ#1842620)
* deadlock between modprobe and netns exit (BZ#1845164)
* exit_boot failed when install RHEL8.1 (BZ#1846180)
* http request is taking more time for endpoint running on different host
via nodeport service (BZ#1847128)
* RHEL8.1 - zEDC problems on z14 (genwqe/pci) (BZ#1847453)
* WARNING: CPU: 1 PID: 0 at arch/x86/kernel/apic/vector.c:846
free_moved_vector+0x141/0x150 (BZ#1848545)
* Backport conntrack race condition fixes (BZ#1851003)
* nf_conntrack module unload fail and refcount become to negative
(BZ#1851005)
* OVS: backport performance patches from upstream to 8.2z (BZ#1851235)
* RHEL8.3: backport "smp: Allow smp_call_function_single_async() to insert
locked csd" (BZ#1851406)
* [DELL EMC 8.2 BUG] NVMe drive is not detected after multiple hotplug (hot
add + surprise remove) operations (BZ#1852045)
Enhancement(s):
* [Mellanox 8.3 FEAT] mlx5: drivers update upto Linux v5.5 (BZ#1843544)
* [IBM 8.3 FEAT] Update nvme driver to latest level for POWER (BZ#1846405)
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 BaseOS (v. 8):
Source:
kernel-4.18.0-193.13.2.el8_2.src.rpm
aarch64:
bpftool-4.18.0-193.13.2.el8_2.aarch64.rpm
bpftool-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-core-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-cross-headers-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-debug-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-debug-core-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-debug-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-debug-devel-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-debug-modules-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-debug-modules-extra-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-devel-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-headers-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-modules-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-modules-extra-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-tools-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-tools-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-tools-libs-4.18.0-193.13.2.el8_2.aarch64.rpm
perf-4.18.0-193.13.2.el8_2.aarch64.rpm
perf-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
python3-perf-4.18.0-193.13.2.el8_2.aarch64.rpm
python3-perf-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
noarch:
kernel-abi-whitelists-4.18.0-193.13.2.el8_2.noarch.rpm
kernel-doc-4.18.0-193.13.2.el8_2.noarch.rpm
ppc64le:
bpftool-4.18.0-193.13.2.el8_2.ppc64le.rpm
bpftool-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-core-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-cross-headers-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-debug-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-debug-core-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-debug-devel-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-debug-modules-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-devel-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-headers-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-modules-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-modules-extra-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-tools-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-tools-libs-4.18.0-193.13.2.el8_2.ppc64le.rpm
perf-4.18.0-193.13.2.el8_2.ppc64le.rpm
perf-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
python3-perf-4.18.0-193.13.2.el8_2.ppc64le.rpm
python3-perf-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
s390x:
bpftool-4.18.0-193.13.2.el8_2.s390x.rpm
bpftool-debuginfo-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-core-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-cross-headers-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-debug-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-debug-core-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-debug-debuginfo-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-debug-devel-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-debug-modules-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-debug-modules-extra-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-debuginfo-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-devel-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-headers-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-modules-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-modules-extra-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-tools-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-tools-debuginfo-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-zfcpdump-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-zfcpdump-core-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-zfcpdump-devel-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-zfcpdump-modules-4.18.0-193.13.2.el8_2.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-193.13.2.el8_2.s390x.rpm
perf-4.18.0-193.13.2.el8_2.s390x.rpm
perf-debuginfo-4.18.0-193.13.2.el8_2.s390x.rpm
python3-perf-4.18.0-193.13.2.el8_2.s390x.rpm
python3-perf-debuginfo-4.18.0-193.13.2.el8_2.s390x.rpm
x86_64:
bpftool-4.18.0-193.13.2.el8_2.x86_64.rpm
bpftool-debuginfo-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-core-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-cross-headers-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-debug-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-debug-core-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-debug-debuginfo-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-debug-devel-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-debug-modules-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-debug-modules-extra-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-debuginfo-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-devel-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-headers-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-modules-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-modules-extra-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-tools-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-tools-debuginfo-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-tools-libs-4.18.0-193.13.2.el8_2.x86_64.rpm
perf-4.18.0-193.13.2.el8_2.x86_64.rpm
perf-debuginfo-4.18.0-193.13.2.el8_2.x86_64.rpm
python3-perf-4.18.0-193.13.2.el8_2.x86_64.rpm
python3-perf-debuginfo-4.18.0-193.13.2.el8_2.x86_64.rpm
Red Hat CodeReady Linux Builder (v. 8):
aarch64:
bpftool-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-debug-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-tools-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
kernel-tools-libs-devel-4.18.0-193.13.2.el8_2.aarch64.rpm
perf-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
python3-perf-debuginfo-4.18.0-193.13.2.el8_2.aarch64.rpm
ppc64le:
bpftool-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
kernel-tools-libs-devel-4.18.0-193.13.2.el8_2.ppc64le.rpm
perf-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
python3-perf-debuginfo-4.18.0-193.13.2.el8_2.ppc64le.rpm
x86_64:
bpftool-debuginfo-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-debug-debuginfo-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-debuginfo-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-tools-debuginfo-4.18.0-193.13.2.el8_2.x86_64.rpm
kernel-tools-libs-devel-4.18.0-193.13.2.el8_2.x86_64.rpm
perf-debuginfo-4.18.0-193.13.2.el8_2.x86_64.rpm
python3-perf-debuginfo-4.18.0-193.13.2.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.
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