drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in kernel-rt
Name: |
Mehrere Probleme in kernel-rt |
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ID: |
RHSA-2022:0821-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Do, 10. März 2022, 22:34 |
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Referenzen: |
https://access.redhat.com/security/vulnerabilities/RHSB-2022-002
https://access.redhat.com/security/cve/CVE-2022-0330
https://access.redhat.com/security/cve/CVE-2021-4083
https://access.redhat.com/security/cve/CVE-2022-22942
https://access.redhat.com/security/cve/CVE-2022-0492
https://access.redhat.com/security/cve/CVE-2022-0847 |
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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-2022:0821-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2022:0821 Issue date: 2022-03-10 CVE Names: CVE-2021-4083 CVE-2022-0330 CVE-2022-0492 CVE-2022-0847 CVE-2022-22942 =====================================================================
1. Summary:
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Extended Update Support.
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 EUS (v. 8.2) - x86_64 Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) - 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: improper initialization of the "flags" member of the new pipe_buffer (CVE-2022-0847)
* kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)
* kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)
* kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492)
* kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)
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 latest RHEL-8.2.z16 Batch (BZ#2057698)
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/):
2029923 - CVE-2021-4083 kernel: fget: check that the fd still exists after getting a ref to it 2042404 - CVE-2022-0330 kernel: possible privileges escalation due to missing TLB flush 2044809 - CVE-2022-22942 kernel: failing usercopy allows for use-after-free exploitation 2051505 - CVE-2022-0492 kernel: cgroups v1 release_agent feature may allow privilege escalation 2060795 - CVE-2022-0847 kernel: improper initialization of the "flags" member of the new pipe_buffer
6. Package List:
Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2):
Source: kernel-rt-4.18.0-193.79.1.rt13.129.el8_2.src.rpm
x86_64: kernel-rt-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-kvm-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-kvm-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm
Red Hat Enterprise Linux Real Time EUS (v. 8.2):
Source: kernel-rt-4.18.0-193.79.1.rt13.129.el8_2.src.rpm
x86_64: kernel-rt-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.79.1.rt13.129.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.79.1.rt13.129.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-2021-4083 https://access.redhat.com/security/cve/CVE-2022-0330 https://access.redhat.com/security/cve/CVE-2022-0492 https://access.redhat.com/security/cve/CVE-2022-0847 https://access.redhat.com/security/cve/CVE-2022-22942 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/RHSB-2022-002
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/
Copyright 2022 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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