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CVE-2021-4218

Date: August 24, 2022

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.

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2021-4218
https://bugzilla.redhat.com/show_bug.cgi?id=2048359
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-4218
https://bugs.centos.org/view.php?id=18395
https://access.redhat.com/security/cve/CVE-2021-4218
https://www.mend.io/vulnerability-database/CVE-2021-4218

Severity Score

Weakness Type (CWE)

Improper Initialization

CWE-665

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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