drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Ausführen von Code mit höheren Privilegien in kernel-rt
Name: |
Ausführen von Code mit höheren Privilegien in kernel-rt |
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ID: |
RHSA-2021:3547-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Mi, 15. September 2021, 23:30 |
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Referenzen: |
https://access.redhat.com/security/cve/CVE-2021-3653 |
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Applikationen: |
RT-Preempt-Realtime-Patch |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
===================================================================== Red Hat Security Advisory
Synopsis: Moderate: kernel-rt security and bug fix update Advisory ID: RHSA-2021:3547-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:3547 Issue date: 2021-09-15 CVE Names: CVE-2021-3653 =====================================================================
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 Moderate. 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: SVM nested virtualization issue in KVM (AVIC support) (CVE-2021-3653)
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-8.4.z source tree (BZ#2001131)
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/):
1983686 - CVE-2021-3653 kernel: SVM nested virtualization issue in KVM (AVIC support)
6. Package List:
Red Hat Enterprise Linux Real Time for NFV (v. 8):
Source: kernel-rt-4.18.0-305.19.1.rt7.91.el8_4.src.rpm
x86_64: kernel-rt-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-core-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-devel-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-kvm-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-modules-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debuginfo-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-devel-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-kvm-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-modules-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-modules-extra-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 8):
Source: kernel-rt-4.18.0-305.19.1.rt7.91.el8_4.src.rpm
x86_64: kernel-rt-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-core-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-devel-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-modules-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debuginfo-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-devel-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-modules-4.18.0-305.19.1.rt7.91.el8_4.x86_64.rpm kernel-rt-modules-extra-4.18.0-305.19.1.rt7.91.el8_4.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-2021-3653 https://access.redhat.com/security/updates/classification/#moderate
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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