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Rocky Linux 8 : kernel (RLSA-2021:5227)

medium Nessus Plugin ID 184597

Synopsis

The remote Rocky Linux host is missing a security update.

Description

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2021:5227 advisory.

 - A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
 (CVE-2021-20321)

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-2021:5227

https://bugzilla.redhat.com/show_bug.cgi?id=2013242

Plugin Details

Severity: Medium

ID: 184597

File Name: rocky_linux_RLSA-2021-5227.nasl

Version: 1.0

Type: local

Published: 11/6/2023

Updated: 11/6/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.5

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

CVSS Score Source: CVE-2021-20321

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

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

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

Vulnerability Information

CPE: p-cpe:/a:rocky:linux:bpftool, p-cpe:/a:rocky:linux:bpftool-debuginfo, p-cpe:/a:rocky:linux:kernel, p-cpe:/a:rocky:linux:kernel-abi-stablelists, p-cpe:/a:rocky:linux:kernel-core, p-cpe:/a:rocky:linux:kernel-cross-headers, p-cpe:/a:rocky:linux:kernel-debug, p-cpe:/a:rocky:linux:kernel-debug-core, p-cpe:/a:rocky:linux:kernel-debug-debuginfo, p-cpe:/a:rocky:linux:kernel-debug-devel, p-cpe:/a:rocky:linux:kernel-debug-modules, p-cpe:/a:rocky:linux:kernel-debug-modules-extra, p-cpe:/a:rocky:linux:kernel-debuginfo, p-cpe:/a:rocky:linux:kernel-debuginfo-common-aarch64, p-cpe:/a:rocky:linux:kernel-debuginfo-common-x86_64, p-cpe:/a:rocky:linux:kernel-devel, p-cpe:/a:rocky:linux:kernel-headers, p-cpe:/a:rocky:linux:kernel-modules, p-cpe:/a:rocky:linux:kernel-modules-extra, p-cpe:/a:rocky:linux:kernel-tools, p-cpe:/a:rocky:linux:kernel-tools-debuginfo, p-cpe:/a:rocky:linux:kernel-tools-libs, p-cpe:/a:rocky:linux:kernel-tools-libs-devel, p-cpe:/a:rocky:linux:perf, p-cpe:/a:rocky:linux:perf-debuginfo, p-cpe:/a:rocky:linux:python3-perf, p-cpe:/a:rocky:linux:python3-perf-debuginfo, cpe:/o:rocky:linux:8

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/21/2021

Vulnerability Publication Date: 12/21/2021

Reference Information

CVE: CVE-2021-20321