Detections
Analytics
RHEL 8 : kernel-rt (RHSA-2022:6437)
medium Nessus Plugin ID 164974
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Synopsis
The remote Red Hat host is missing one or more security updates for kernel-rt.Description
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:6437 advisory.The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* Incomplete cleanup of multi-core shared buffers (aka SBDR) (CVE-2022-21123)
* Incomplete cleanup of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)
* Incomplete cleanup in specific special register write operations (aka DRPW) (CVE-2022-21166)
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):
* The latest RHEL 8.6.z3 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2111112)
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL kernel-rt package based on the guidance in RHSA-2022:6437.See Also
http://www.nessus.org/u?25dd0877
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/errata/RHSA-2022:6437
https://bugzilla.redhat.com/show_bug.cgi?id=2090237
Plugin Details
Severity: Medium
ID: 164974
File Name: redhat-RHSA-2022-6437.nasl
Version: 1.9
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 9/13/2022
Updated: 11/7/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: Low
Base Score: 2.1
Temporal Score: 1.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2022-21166
CVSS v3
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 4.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules, cpe:/o:redhat:rhel_eus:8.6, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 9/13/2022
Vulnerability Publication Date: 6/14/2022