CVE-2021-4218

CVSS V2 None CVSS V3 Medium 5.5

Description

A flaw was found in the Linux kernel’s implementation of reading the SVC RDMA counters. Reading the counter sysctl panics the system. This flaw allows a local attacker with local access to cause a denial of service while the system reboots. The issue is specific to CentOS/RHEL.

Overview

CVE ID
CVE-2021-4218

Assigner
secalert@redhat.com

Vulnerability Status
Analyzed

Published Version
2022-08-24T16:15:10

Last Modified Date
2022-08-30T18:35:36

Weakness Enumerations

CWE	URL
CWE-665	http://cwe.mitre.org/data/definitions/665.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:o:linux:linux_kernel:-:::::::*	1	OR

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
5.5

Base Severity
MEDIUM

Exploitability Score
1.8

Impact Score
3.6

References

Reference URL	Reference Tags
https://access.redhat.com/security/cve/CVE-2021-4218
https://bugzilla.redhat.com/show_bug.cgi?id=2048359
https://bugs.centos.org/view.php?id=18395

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-4218
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4218

History

Created	Old Value	New Value	Data Type	Notes
2022-08-24 17:00:14				Added to TrackCVE