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CVE-2021-3764

Date: August 23, 2022

A memory leak flaw was found in the Linux kernel's ccp_run_aes_gcm_cmd() function that allows an attacker to cause a denial of service. The vulnerability is similar to the older CVE-2019-18808. The highest threat from this vulnerability is to system availability.

Severity Score

Related Resources (7)

https://security-tracker.debian.org/tracker/CVE-2021-3764
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3764
https://github.com/torvalds/linux/commit/505d9dcb0f7ddf9d075e729523a33d38642ae680
https://bugzilla.redhat.com/show_bug.cgi?id=1997467
https://nvd.nist.gov/vuln/detail/CVE-2021-3764
https://access.redhat.com/security/cve/CVE-2021-3764
https://www.mend.io/vulnerability-database/CVE-2021-3764

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption ('Resource Exhaustion')

CWE-400

Missing Release of Memory after Effective Lifetime

CWE-401

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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