drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in kernel-rt
Name: |
Zwei Probleme in kernel-rt |
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ID: |
RHSA-2021:2169-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Di, 1. Juni 2021, 22:22 |
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Referenzen: |
https://access.redhat.com/security/cve/CVE-2021-3501
https://access.redhat.com/security/cve/CVE-2021-3543 |
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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: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2021:2169-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:2169 Issue date: 2021-06-01 CVE Names: CVE-2021-3501 CVE-2021-3543 =====================================================================
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: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run (CVE-2021-3501)
* kernel: nitro_enclaves stale file descriptors on failed usercopy (CVE-2021-3543)
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.z0 source tree (BZ#1957489)
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/):
1950136 - CVE-2021-3501 kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run 1953022 - CVE-2021-3543 kernel: nitro_enclaves stale file descriptors on failed usercopy
6. Package List:
Red Hat Enterprise Linux Real Time for NFV (v. 8):
Source: kernel-rt-4.18.0-305.3.1.rt7.75.el8_4.src.rpm
x86_64: kernel-rt-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-core-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-devel-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-kvm-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-modules-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debuginfo-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-devel-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-kvm-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-modules-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-modules-extra-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 8):
Source: kernel-rt-4.18.0-305.3.1.rt7.75.el8_4.src.rpm
x86_64: kernel-rt-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-core-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-devel-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-modules-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debuginfo-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-devel-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-modules-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm kernel-rt-modules-extra-4.18.0-305.3.1.rt7.75.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-2021-3501 https://access.redhat.com/security/cve/CVE-2021-3543 https://access.redhat.com/security/updates/classification/#important
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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