Detections
Analytics
RHEL 7 : kernel-rt (RHSA-2020:5026)
medium Nessus Plugin ID 142706
Language:
Synopsis
The remote Red Hat host is missing one or more security updates for kernel-rt.Description
The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:5026 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):
* kernel: kernel: buffer over write in vgacon_scroll (CVE-2020-14331)
* kernel: net-sysfs: *_queue_add_kobject refcount issue (CVE-2019-20811)
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):
* [RHEL-7.9] net/ipv6/ip6_flowlabel.c:85 suspicious rcu_dereference_check() usage! (kernel-rt-debug) (BZ#1836846)
* md/raid: sleeping function called from invalid context triggered by CKI storage/swraid/trim test (BZ#1857872)
* Infinite looping when trying to acquire eventpoll->mtx during eventpoll_release_file, 2nd try (BZ#1877695)
* kernel-rt: update to the latest RHEL7.9.z1 source tree (BZ#1883995)
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-2020:5026.See Also
http://www.nessus.org/u?e1bac20b
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/errata/RHSA-2020:5026
Plugin Details
Severity: Medium
ID: 142706
File Name: redhat-RHSA-2020-5026.nasl
Version: 1.11
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 11/11/2020
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: Medium
Score: 6.7
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2020-14331
CVSS v3
Risk Factor: Medium
Base Score: 6.6
Temporal Score: 5.9
Vector: CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-doc, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace, p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm
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: 11/10/2020
Vulnerability Publication Date: 6/3/2020
Reference Information
CVE: CVE-2019-20811, CVE-2020-14331