Linux Kernel up to 5.14-rc2 Tracing resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 5.14-rc2. The affected element is an unknown function of the component Tracing Module. Such manipulation leads to resource consumption. This vulnerability is traded as CVE-2021-3679. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 5.14-rc2 (Operating System). Affected by this issue is an unknown code block of the component Tracing Module. 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 08/06/2021. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2021-3679. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 246620 (Linux Distros Unpatched Vulnerability : CVE-2021-3679), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.14-rc3 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (246620). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.9
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 246620
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2021-3679

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.14-rc3
Patch: git.kernel.org

Timelineinfo

08/03/2021 🔍
08/06/2021 +3 days 🔍
08/06/2021 +0 days 🔍
08/09/2025 +1464 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2021-3679 (🔍)
GCVE (CVE): GCVE-0-2021-3679
GCVE (VulDB): GCVE-100-180164

Entryinfo

Created: 08/06/2021 06:46
Updated: 08/09/2025 18:26
Changes: 08/06/2021 06:46 (41), 08/08/2021 21:35 (2), 08/09/2025 18:26 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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