Sigurnosni nedostatak jezgre operacijskog sustava

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

Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2020:2664-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2664
Issue date: 2020-06-23
CVE Names: CVE-2020-12888
=====================================================================

1. Summary:

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

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 Client (v. 7) – noarch, x86_64
Red Hat Enterprise Linux Client Optional (v. 7) – x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) – noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) – x86_64
Red Hat Enterprise Linux Server (v. 7) – noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) – ppc64, ppc64le, x86_64
Red Hat Enterprise Linux Workstation (v. 7) – noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) – x86_64

3. Description:

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

Security Fix(es):

* 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):

* kernel: hw: provide reporting and microcode mitigation toggle for
CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1827187)

* kernel BUG at fs/fscache/operation.c:70! FS-Cache: 4 == 5 is false –
current state is FSCACHE_OP_ST_COMPLETE but should be FSCACHE_OP_CANCELLED
in fscache_enqueue_operation (BZ#1839757)

* Deadlock condition grabbing ssb_state lock (BZ#1841121)

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/):

1836244 – CVE-2020-12888 Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
kernel-3.10.0-1127.13.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-1127.13.1.el7.noarch.rpm
kernel-doc-3.10.0-1127.13.1.el7.noarch.rpm

x86_64:
bpftool-3.10.0-1127.13.1.el7.x86_64.rpm
bpftool-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-debug-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-devel-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-headers-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-tools-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-1127.13.1.el7.x86_64.rpm
perf-3.10.0-1127.13.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm
python-perf-3.10.0-1127.13.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
bpftool-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-1127.13.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-1127.13.1.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
kernel-3.10.0-1127.13.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-1127.13.1.el7.noarch.rpm
kernel-doc-3.10.0-1127.13.1.el7.noarch.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

Red Hat Enterprise Linux Server (v. 7):

Source:
kernel-3.10.0-1127.13.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-1127.13.1.el7.noarch.rpm
kernel-doc-3.10.0-1127.13.1.el7.noarch.rpm

ppc64:
bpftool-3.10.0-1127.13.1.el7.ppc64.rpm
bpftool-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-debug-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-devel-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-headers-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-tools-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-tools-libs-3.10.0-1127.13.1.el7.ppc64.rpm
perf-3.10.0-1127.13.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm
python-perf-3.10.0-1127.13.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm

ppc64le:
bpftool-3.10.0-1127.13.1.el7.ppc64le.rpm
bpftool-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-debug-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-devel-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-headers-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-tools-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-1127.13.1.el7.ppc64le.rpm
perf-3.10.0-1127.13.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm
python-perf-3.10.0-1127.13.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm

s390x:
bpftool-3.10.0-1127.13.1.el7.s390x.rpm
bpftool-debuginfo-3.10.0-1127.13.1.el7.s390x.rpm
kernel-3.10.0-1127.13.1.el7.s390x.rpm
kernel-debug-3.10.0-1127.13.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-1127.13.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-1127.13.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-1127.13.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-1127.13.1.el7.s390x.rpm
kernel-devel-3.10.0-1127.13.1.el7.s390x.rpm
kernel-headers-3.10.0-1127.13.1.el7.s390x.rpm
kernel-kdump-3.10.0-1127.13.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-1127.13.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-1127.13.1.el7.s390x.rpm
perf-3.10.0-1127.13.1.el7.s390x.rpm
perf-debuginfo-3.10.0-1127.13.1.el7.s390x.rpm
python-perf-3.10.0-1127.13.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-1127.13.1.el7.s390x.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
bpftool-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-1127.13.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-1127.13.1.el7.ppc64.rpm

ppc64le:
bpftool-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-1127.13.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-1127.13.1.el7.ppc64le.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
kernel-3.10.0-1127.13.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-1127.13.1.el7.noarch.rpm
kernel-doc-3.10.0-1127.13.1.el7.noarch.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

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-2020-12888
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/

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

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

Synopsis:          Important: kernel-rt security and bug fix update
Advisory ID:       RHSA-2020:2665-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:2665
Issue date:        2020-06-23
CVE Names:         CVE-2020-12888 
=====================================================================

1. Summary:

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

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 Realtime (v. 7) - noarch, x86_64
Red Hat Enterprise Linux for Real Time for NFV (v. 7) - noarch, 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: 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):

* kernel: hw: provide reporting and microcode mitigation toggle for
CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1827198)

* kernel-rt: update to the latest RHEL7.8.z source tree (BZ#1844620)

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/):

1836244 - CVE-2020-12888 Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario

6. Package List:

Red Hat Enterprise Linux for Real Time for NFV (v. 7):

Source:
kernel-rt-3.10.0-1127.13.1.rt56.1110.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-1127.13.1.rt56.1110.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debug-kvm-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-kvm-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-trace-kvm-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm

Red Hat Enterprise Linux Realtime (v. 7):

Source:
kernel-rt-3.10.0-1127.13.1.rt56.1110.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-1127.13.1.rt56.1110.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1127.13.1.rt56.1110.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-1127.13.1.rt56.1110.el7.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-2020-12888
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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