What is CVE-2021-33135?

CVE-2021-33135 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Uncontrolled Resource Consumption flaw (CWE-400). CVE-2021-33135 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-33135?

CVE-2021-33135 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-33135?

No patch is currently available for CVE-2021-33135. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-33135 actively exploited?

CVE-2021-33135 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Uncontrolled Resource Consumption (CWE-400)?

The product does not properly control the amount of resources it consumes, leading to exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/400.html

CVE-2021-33135

Medium

Uncontrolled resource consumption in the Linux kernel drivers for Intel(R) SGX may allow an authenticated user to potentially enable denial of service via local access.

Package Linux Kernel

Published 2022-05-12

Last modified 2025-05-05

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-400

CVE-2021-33135 is a Uncontrolled Resource Consumption vulnerability

What is Uncontrolled Resource Consumption?

The product does not properly control the amount of resources it consumes, leading to exhaustion. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2021-33135 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Intel
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00603.html

Product Vendor Advisory

Details

CVE ID CVE-2021-33135

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2022-05-12

Modified 2025-05-05

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-33135?

CVE-2021-33135 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Uncontrolled Resource Consumption flaw (CWE-400) . CVE-2021-33135 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-33135?

CVE-2021-33135 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-33135?

No patch is currently available for CVE-2021-33135. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-33135 actively exploited?

No — CVE-2021-33135 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Uncontrolled Resource Consumption (CWE-400)?

The product does not properly control the amount of resources it consumes, leading to exhaustion. View CWE-400 on MITRE CWE →