drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in kernel-rt
Name: |
Mehrere Probleme in kernel-rt |
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ID: |
RHSA-2021:2719-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Di, 20. Juli 2021, 23:45 |
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Referenzen: |
https://access.redhat.com/security/vulnerabilities/RHSB-2021-006
https://access.redhat.com/security/cve/CVE-2020-26541
https://access.redhat.com/security/cve/CVE-2020-35508
https://access.redhat.com/security/cve/CVE-2021-33034
https://access.redhat.com/security/cve/CVE-2020-25704
https://access.redhat.com/security/cve/CVE-2021-33909 |
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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-2021:2719-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:2719 Issue date: 2021-07-20 CVE Names: CVE-2020-25704 CVE-2020-26541 CVE-2020-35508 CVE-2021-33034 CVE-2021-33909 =====================================================================
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: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)
* kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)
* kernel: perf_event_parse_addr_filter memory (CVE-2020-25704)
* kernel: security bypass in certs/blacklist.c and certs/system_keyring.c (CVE-2020-26541)
* kernel: fork: fix copy_process(CLONE_PARENT) race with the exiting - ->real_parent (CVE-2020-35508)
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.z10 Batch source tree (BZ#1968022)
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/):
1886285 - CVE-2020-26541 kernel: security bypass in certs/blacklist.c and certs/system_keyring.c 1895961 - CVE-2020-25704 kernel: perf_event_parse_addr_filter memory 1902724 - CVE-2020-35508 kernel: fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent 1961305 - CVE-2021-33034 kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan 1968022 - kernel-rt: update RT source tree to the latest RHEL-8.2.z10 Batch source tree 1970273 - CVE-2021-33909 kernel: size_t-to-int conversion vulnerability in the filesystem layer
6. Package List:
Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2):
Source: kernel-rt-4.18.0-193.60.2.rt13.112.el8_2.src.rpm
x86_64: kernel-rt-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-kvm-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-kvm-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm
Red Hat Enterprise Linux Real Time EUS (v. 8.2):
Source: kernel-rt-4.18.0-193.60.2.rt13.112.el8_2.src.rpm
x86_64: kernel-rt-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.60.2.rt13.112.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.60.2.rt13.112.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-2020-25704 https://access.redhat.com/security/cve/CVE-2020-26541 https://access.redhat.com/security/cve/CVE-2020-35508 https://access.redhat.com/security/cve/CVE-2021-33034 https://access.redhat.com/security/cve/CVE-2021-33909 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/RHSB-2021-006
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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