drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in kernel-rt
Name: |
Zwei Probleme in kernel-rt |
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ID: |
RHSA-2021:0338-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Di, 2. Februar 2021, 22:34 |
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Referenzen: |
https://access.redhat.com/security/cve/CVE-2020-35513
https://access.redhat.com/security/cve/CVE-2020-15436 |
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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-2021:0338-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0338 Issue date: 2021-02-02 CVE Names: CVE-2020-15436 CVE-2020-35513 =====================================================================
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 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 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: use-after-free in fs/block_dev.c (CVE-2020-15436)
* kernel: Nfsd failure to clear umask after processing an open or create (CVE-2020-35513)
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.z3 source tree (BZ#1906133)
* [kernel-rt] WARNING: CPU: 8 PID: 586 at kernel/sched/core.c:3644 migrate_enable+0x15f/0x210 (BZ#1916123)
* [kernel-rt-debug] [ BUG: bad unlock balance detected! ] [RHEL-7.9.z] (BZ#1916130)
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/):
1901168 - CVE-2020-15436 kernel: use-after-free in fs/block_dev.c 1906133 - kernel-rt: update to the latest RHEL7.9.z3 source tree 1911309 - CVE-2020-35513 kernel: Nfsd failure to clear umask after processing an open or create
6. Package List:
Red Hat Enterprise Linux for Real Time for NFV (v. 7):
Source: kernel-rt-3.10.0-1160.15.2.rt56.1152.el7.src.rpm
noarch: kernel-rt-doc-3.10.0-1160.15.2.rt56.1152.el7.noarch.rpm
x86_64: kernel-rt-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-kvm-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm
Red Hat Enterprise Linux for Real Time (v. 7):
Source: kernel-rt-3.10.0-1160.15.2.rt56.1152.el7.src.rpm
noarch: kernel-rt-doc-3.10.0-1160.15.2.rt56.1152.el7.noarch.rpm
x86_64: kernel-rt-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.15.2.rt56.1152.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-2020-15436 https://access.redhat.com/security/cve/CVE-2020-35513 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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