CVE-2021-4218

Published: Aug 24, 2022Modified: Jun 17, 2026

5.5

Vector

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

Exploitability: 1.8 / Impact: 3.6

Source: NVD

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.

Affected (1)

Products: Linux: Linux Kernel

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	All versions

Related CWEs

Improper Initialization

The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.

References (6)

https://access.redhat.com/security/cve/CVE-2021-4218

Source: secalert@redhat.com

Third Party Advisory

https://bugs.centos.org/view.php?id=18395

Source: secalert@redhat.com

ExploitThird Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2048359

Source: secalert@redhat.com

Issue TrackingThird Party Advisory

https://access.redhat.com/security/cve/CVE-2021-4218

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://bugs.centos.org/view.php?id=18395

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2048359

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingThird Party Advisory

Timeline

No history available yet.