A kernel-rt security and bug fix update has been released for Red Hat Enterprise Linux 8.
RHSA-2020:4289-01: Important: kernel-rt security and bug fix update
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2020:4289-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4289
Issue date: 2020-10-20
CVE Names: CVE-2020-12351 CVE-2020-12352 CVE-2020-14331
CVE-2020-14385 CVE-2020-14386
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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: net: bluetooth: type confusion while processing AMP packets
(CVE-2020-12351)
* kernel: net: bluetooth: information leak when processing certain AMP
packets (CVE-2020-12352)
* kernel: metadata validator in XFS may cause an inode with a valid,
user-creatable extended attribute to be flagged as corrupt (CVE-2020-14385)
* kernel: memory corruption in net/packet/af_packet.c leads to elevation of
privilege (CVE-2020-14386)
* kernel: kernel: buffer over write in vgacon_scroll (CVE-2020-14331)
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.z Batch#4 source tree
(BZ#1877921)
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/):
1858679 - CVE-2020-14331 kernel: kernel: buffer over write in vgacon_scroll
1874800 - CVE-2020-14385 kernel: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt
1875699 - CVE-2020-14386 kernel: memory corruption in net/packet/af_packet.c leads to elevation of privilege
1886521 - CVE-2020-12351 kernel: net: bluetooth: type confusion while processing AMP packets
1886529 - CVE-2020-12352 kernel: net: bluetooth: information leak when processing certain AMP packets
6. Package List:
Red Hat Enterprise Linux Real Time for NFV (v. 8):
Source:
kernel-rt-4.18.0-193.28.1.rt13.77.el8_2.src.rpm
x86_64:
kernel-rt-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-core-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-core-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-devel-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-kvm-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-modules-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debuginfo-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-devel-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-kvm-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-modules-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-modules-extra-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 8):
Source:
kernel-rt-4.18.0-193.28.1.rt13.77.el8_2.src.rpm
x86_64:
kernel-rt-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-core-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-core-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-devel-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-modules-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debuginfo-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-devel-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-modules-4.18.0-193.28.1.rt13.77.el8_2.x86_64.rpm
kernel-rt-modules-extra-4.18.0-193.28.1.rt13.77.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-2020-12351
https://access.redhat.com/security/cve/CVE-2020-12352
https://access.redhat.com/security/cve/CVE-2020-14331
https://access.redhat.com/security/cve/CVE-2020-14385
https://access.redhat.com/security/cve/CVE-2020-14386
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/BleedingTooth
8. Contact:
The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2020 Red Hat, Inc.
