A kernel-rt security and bug fix update has been released for Red Hat Enterprise Linux 7.
RHSA-2020:5441-01: Important: kernel-rt security and bug fix update
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2020:5441-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:5441
Issue date: 2020-12-15
CVE Names: CVE-2019-18282 CVE-2020-10769 CVE-2020-14314
CVE-2020-14385 CVE-2020-24394 CVE-2020-25212
CVE-2020-25643
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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 for Real Time (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: metadata validator in XFS may cause an inode with a valid,
user-creatable extended attribute to be flagged as corrupt (CVE-2020-14385)
* kernel: The flow_dissector feature allows device tracking
(CVE-2019-18282)
* kernel: Buffer over-read in crypto_authenc_extractkeys() when a payload
longer than 4 bytes is not aligned. (CVE-2020-10769)
* kernel: buffer uses out of index in ext3/4 filesystem (CVE-2020-14314)
* kernel: umask not applied on filesystem without ACL support
(CVE-2020-24394)
* kernel: TOCTOU mismatch in the NFS client code (CVE-2020-25212)
* kernel: improper input validation in ppp_cp_parse_cr function leads to
memory corruption and read overflow (CVE-2020-25643)
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 to the latest RHEL7.9.z2 source tree (BZ#1873318)
* deadlock between handle_mm_fault() and ptep_clear_flush() (BZ#1888872)
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/):
1708775 - CVE-2020-10769 kernel: Buffer over-read in crypto_authenc_extractkeys() when a payload longer than 4 bytes is not aligned.
1796360 - CVE-2019-18282 kernel: The flow_dissector feature allows device tracking
1853922 - CVE-2020-14314 kernel: buffer uses out of index in ext3/4 filesystem
1869141 - CVE-2020-24394 kernel: umask not applied on filesystem without ACL support
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
1877575 - CVE-2020-25212 kernel: TOCTOU mismatch in the NFS client code
1879981 - CVE-2020-25643 kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow
1888872 - deadlock between handle_mm_fault() and ptep_clear_flush() [rhel-7.9.z]
6. Package List:
Red Hat Enterprise Linux for Real Time for NFV (v. 7):
Source:
kernel-rt-3.10.0-1160.11.1.rt56.1145.el7.src.rpm
noarch:
kernel-rt-doc-3.10.0-1160.11.1.rt56.1145.el7.noarch.rpm
x86_64:
kernel-rt-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debug-kvm-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-kvm-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-trace-kvm-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
Red Hat Enterprise Linux for Real Time (v. 7):
Source:
kernel-rt-3.10.0-1160.11.1.rt56.1145.el7.src.rpm
noarch:
kernel-rt-doc-3.10.0-1160.11.1.rt56.1145.el7.noarch.rpm
x86_64:
kernel-rt-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1160.11.1.rt56.1145.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1160.11.1.rt56.1145.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-2019-18282
https://access.redhat.com/security/cve/CVE-2020-10769
https://access.redhat.com/security/cve/CVE-2020-14314
https://access.redhat.com/security/cve/CVE-2020-14385
https://access.redhat.com/security/cve/CVE-2020-24394
https://access.redhat.com/security/cve/CVE-2020-25212
https://access.redhat.com/security/cve/CVE-2020-25643
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2020 Red Hat, Inc.
