VDB-194219 · CVE-2021-3744 · Nessus 235794

Linux Kernel ccp-ops.c ccp_run_aes_gcm_cmd resource consumption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.5	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel. This vulnerability affects the function ccp_run_aes_gcm_cmd of the file drivers/crypto/ccp/ccp-ops.c. The manipulation leads to resource consumption. This vulnerability is traded as CVE-2021-3744. There is no exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (the affected version is unknown). It has been rated as problematic. This issue affects the function ccp_run_aes_gcm_cmd of the file drivers/crypto/ccp/ccp-ops.c. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability.

The weakness was shared 03/04/2022. It is possible to read the advisory at seclists.org. The identification of this vulnerability is CVE-2021-3744 since 08/27/2021. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 235794 (Amazon Linux 2 : kernel (ALASKERNEL-5.4-2025-099)), which helps to determine the existence of the flaw in a target environment.

Applying the patch 505d9dcb0f7ddf9d075e729523a33d38642ae680 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (235794). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 235794
Nessus Name: Amazon Linux 2 : kernel (ALASKERNEL-5.4-2025-099)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 505d9dcb0f7ddf9d075e729523a33d38642ae680

Timelineinfo

08/27/2021 🔍
03/04/2022 +189 days 🔍
03/04/2022 +0 days 🔍
05/13/2025 +1166 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 505d9dcb0f7ddf9d075e729523a33d38642ae680
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-3744 (🔍)
GCVE (CVE): GCVE-0-2021-3744
GCVE (VulDB): GCVE-100-194219

Entryinfo

Created: 03/04/2022 19:28
Updated: 05/13/2025 19:11
Changes: 03/04/2022 19:28 (42), 03/06/2022 15:05 (2), 05/13/2025 19:11 (16)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.