What is CVE-2021-3764?

CVE-2021-3764 is a medium-severity vulnerability in Linux Kernel, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2022-08-23.

How severe is CVE-2021-3764?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Resource exhaustion in Linux Kernel

CVE-2021-3764

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.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.003 (17.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux Linux_kernel — versions 5.15
N/a Linux Kernel — versions Fixed in v5.15-rc4

Weakness classification (CWE)

References

secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC)
secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Issue Tracking)
secalert@redhat.com (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-3764?: CVE-2021-3764 is a medium-severity vulnerability in Linux Kernel, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2022-08-23.
How severe is CVE-2021-3764?: Medium severity. CVSS v3 base score is 5.5 out of 10.