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Rocky Linux 8 : kernel-rt (RLSA-2021:4646)

critical Nessus Plugin ID 157770

Synopsis

The remote Rocky Linux host is missing one or more security updates.

Description

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2021:4646 advisory.

 - A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user privileges to cause a denial of service, slowing and eventually stopping the system while running OSP.
 (CVE-2021-20317)

 - An issue was discovered in net/tipc/crypto.c in the Linux kernel before 5.14.16. The Transparent Inter- Process Communication (TIPC) functionality allows remote attackers to exploit insufficient validation of user-supplied sizes for the MSG_CRYPTO message type. (CVE-2021-43267)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://errata.rockylinux.org/RLSA-2021:4646

https://bugzilla.redhat.com/show_bug.cgi?id=2005258

https://bugzilla.redhat.com/show_bug.cgi?id=2020362

Plugin Details

Severity: Critical

ID: 157770

File Name: rocky_linux_RLSA-2021-4646.nasl

Version: 1.5

Type: local

Published: 2/9/2022

Updated: 11/6/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-43267

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:rocky:linux:kernel-rt, p-cpe:/a:rocky:linux:kernel-rt-core, p-cpe:/a:rocky:linux:kernel-rt-debug, p-cpe:/a:rocky:linux:kernel-rt-debug-core, p-cpe:/a:rocky:linux:kernel-rt-debug-debuginfo, p-cpe:/a:rocky:linux:kernel-rt-debug-devel, p-cpe:/a:rocky:linux:kernel-rt-debug-modules, p-cpe:/a:rocky:linux:kernel-rt-debug-modules-extra, p-cpe:/a:rocky:linux:kernel-rt-debuginfo, p-cpe:/a:rocky:linux:kernel-rt-debuginfo-common-x86_64, p-cpe:/a:rocky:linux:kernel-rt-devel, p-cpe:/a:rocky:linux:kernel-rt-kvm, p-cpe:/a:rocky:linux:kernel-rt-modules, p-cpe:/a:rocky:linux:kernel-rt-modules-extra, cpe:/o:rocky:linux:8

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/16/2021

Vulnerability Publication Date: 9/27/2021

Reference Information

CVE: CVE-2021-20317, CVE-2021-43267