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

Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2020:2427-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2427
Issue date: 2020-06-09
CVE Names: CVE-2020-12657
=====================================================================

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 block/bfq-iosched.c related to
bfq_idle_slice_timer_body (CVE-2020-12657)

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: hw: provide reporting and microcode mitigation toggle for
CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1827191)

* ipsec interfaces: fix sending with bpf_redirect() / AF_PACKET sockets
(BZ#1821375)

* IB/core: deadlock on rdma_nl_mutex when netlink triggers on-demand
modprobe rdma_cm (BZ#1821381)

* dm: fix excessive bio splitting that results in performance regressions
(BZ#1821382)

* system time jumps when hotplug vcpu on a long uptime guest (BZ#1822498)

* [DELL 8.2 BUG]Ethernet : e1000e doesn’t work after S2I (BZ#1825262)

* NFSv3 sec=krb5p fails against an ONTAP server (BZ#1826219)

* Stand-alone CPU Linpack test reports bad residual on HPC Cluster node(s)
while running RHEL 8 (BZ#1827619)

* [DELL 8.2 BUG]bluetooth Scanning block S3 and Suspend to idle
(BZ#1827620)

* RHEL8.2 Beta – SMC-R connection with vlan-id fails (BZ#1827631)

* RHEL8.1 – RHEL8.1 kernel
4.18.0-147.3.1.el8.bz181950_test001.ppc64le+debug failed during LPM test
(p8/p9):idahop08:LPM (vtpm) (BZ#1827632)

* missing version.h dependency for modpost may cause build to fail
(BZ#1828229)

* efi: kernel panic during ltp fs test – read_all -d /sys -q -r 10
(BZ#1829527)

* Let “isolcpus=” skip unknown sub-parameters (BZ#1832367)

* RHEL8.0 – Very bad performance with small blocks in FC-IO found by SAP
HANA on POWER tests on RHEL8.0 (compared to RHEL7.4) (BZ#1834517)

* [FJ8.2 Bug]: [REG] NFS-client panic at
nfs4_get_valid_delegation+0x1c/0x40 [nfsv4] (BZ#1837969)

* [RHEL-8.3] upstream bonding driver refresh (BZ#1838477)

* Enable xt_u32 module (BZ#1840799)

* Move xt_u32 module to kernel-modules-extra (BZ#1840800)

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/):

1832866 – CVE-2020-12657 kernel: use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body

6. Package List:

Red Hat Enterprise Linux BaseOS (v. 8):

Source:
kernel-4.18.0-193.6.3.el8_2.src.rpm

aarch64:
bpftool-4.18.0-193.6.3.el8_2.aarch64.rpm
bpftool-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-core-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-cross-headers-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-debug-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-debug-core-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-debug-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-debug-devel-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-debug-modules-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-debug-modules-extra-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-devel-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-headers-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-modules-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-modules-extra-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-tools-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-tools-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-tools-libs-4.18.0-193.6.3.el8_2.aarch64.rpm
perf-4.18.0-193.6.3.el8_2.aarch64.rpm
perf-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm
python3-perf-4.18.0-193.6.3.el8_2.aarch64.rpm
python3-perf-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm

noarch:
kernel-abi-whitelists-4.18.0-193.6.3.el8_2.noarch.rpm
kernel-doc-4.18.0-193.6.3.el8_2.noarch.rpm

ppc64le:
bpftool-4.18.0-193.6.3.el8_2.ppc64le.rpm
bpftool-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-core-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-cross-headers-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-debug-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-debug-core-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-debug-devel-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-debug-modules-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-devel-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-headers-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-modules-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-modules-extra-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-tools-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-tools-libs-4.18.0-193.6.3.el8_2.ppc64le.rpm
perf-4.18.0-193.6.3.el8_2.ppc64le.rpm
perf-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm
python3-perf-4.18.0-193.6.3.el8_2.ppc64le.rpm
python3-perf-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm

s390x:
bpftool-4.18.0-193.6.3.el8_2.s390x.rpm
bpftool-debuginfo-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-core-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-cross-headers-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-debug-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-debug-core-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-debug-debuginfo-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-debug-devel-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-debug-modules-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-debug-modules-extra-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-debuginfo-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-devel-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-headers-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-modules-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-modules-extra-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-tools-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-tools-debuginfo-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-zfcpdump-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-zfcpdump-core-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-zfcpdump-devel-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-zfcpdump-modules-4.18.0-193.6.3.el8_2.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-193.6.3.el8_2.s390x.rpm
perf-4.18.0-193.6.3.el8_2.s390x.rpm
perf-debuginfo-4.18.0-193.6.3.el8_2.s390x.rpm
python3-perf-4.18.0-193.6.3.el8_2.s390x.rpm
python3-perf-debuginfo-4.18.0-193.6.3.el8_2.s390x.rpm

x86_64:
bpftool-4.18.0-193.6.3.el8_2.x86_64.rpm
bpftool-debuginfo-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-core-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-cross-headers-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-debug-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-debug-core-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-debug-debuginfo-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-debug-devel-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-debug-modules-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-debug-modules-extra-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-debuginfo-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-devel-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-headers-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-modules-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-modules-extra-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-tools-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-tools-debuginfo-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-tools-libs-4.18.0-193.6.3.el8_2.x86_64.rpm
perf-4.18.0-193.6.3.el8_2.x86_64.rpm
perf-debuginfo-4.18.0-193.6.3.el8_2.x86_64.rpm
python3-perf-4.18.0-193.6.3.el8_2.x86_64.rpm
python3-perf-debuginfo-4.18.0-193.6.3.el8_2.x86_64.rpm

Red Hat CodeReady Linux Builder (v. 8):

aarch64:
bpftool-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-debug-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-tools-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm
kernel-tools-libs-devel-4.18.0-193.6.3.el8_2.aarch64.rpm
perf-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm
python3-perf-debuginfo-4.18.0-193.6.3.el8_2.aarch64.rpm

ppc64le:
bpftool-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm
kernel-tools-libs-devel-4.18.0-193.6.3.el8_2.ppc64le.rpm
perf-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm
python3-perf-debuginfo-4.18.0-193.6.3.el8_2.ppc64le.rpm

x86_64:
bpftool-debuginfo-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-debug-debuginfo-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-debuginfo-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-tools-debuginfo-4.18.0-193.6.3.el8_2.x86_64.rpm
kernel-tools-libs-devel-4.18.0-193.6.3.el8_2.x86_64.rpm
perf-debuginfo-4.18.0-193.6.3.el8_2.x86_64.rpm
python3-perf-debuginfo-4.18.0-193.6.3.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-2020-12657
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/solutions/5142691

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

Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2020:2428-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2428
Issue date: 2020-06-09
CVE Names: CVE-2020-12657
=====================================================================

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 block/bfq-iosched.c related to
bfq_idle_slice_timer_body (CVE-2020-12657)

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: hw: provide reporting and microcode mitigation toggle for
CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1827193)

* kernel-rt: update RT source tree to the RHEL-8.2.z1 source tree
(BZ#1816271)

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/):

1832866 – CVE-2020-12657 kernel: use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body

6. Package List:

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

Source:
kernel-rt-4.18.0-193.6.3.rt13.59.el8_2.src.rpm

x86_64:
kernel-rt-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-core-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-core-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-devel-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-kvm-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-modules-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debuginfo-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-devel-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-kvm-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-modules-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-modules-extra-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm

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

Source:
kernel-rt-4.18.0-193.6.3.rt13.59.el8_2.src.rpm

x86_64:
kernel-rt-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-core-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-core-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-devel-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-modules-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debuginfo-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-devel-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-modules-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
kernel-rt-modules-extra-4.18.0-193.6.3.rt13.59.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-2020-12657
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/solutions/5142691

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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