CVE-2021-47079 Vulnerability Analysis & Exploit Details

CVE-2021-47079
Vulnerability Scoring

5.5
/10
Significant Risk

Security assessments indicate that CVE-2021-47079 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2021-47079 Details

Status: Analyzed

Last updated: 🕡 09 Dec 2024, 18:41 UTC
Originally published on: 🕙 01 Mar 2024, 22:15 UTC

Time between publication and last update: 282 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2021-47079 Vulnerability Summary

CVE-2021-47079: In the Linux kernel, the following vulnerability has been resolved: platform/x86: ideapad-laptop: fix a NULL pointer dereference The third parameter of dytc_cql_command should not be NULL since it will be dereferenced immediately.

Assessing the Risk of CVE-2021-47079

Access Complexity Graph

The exploitability of CVE-2021-47079 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2021-47079

CVE-2021-47079 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2021-47079, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2021-47079, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2021-47079 has no significant impact on data confidentiality.
  • Integrity: None
    CVE-2021-47079 poses no threat to data integrity.
  • Availability: High
    CVE-2021-47079 can disrupt system operations, potentially causing complete denial of service (DoS).

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.043% (probability of exploit)

EPSS Percentile: 12.0% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 88.0% of others.

CVE-2021-47079 References

External References

CWE Common Weakness Enumeration

CWE-476

Vulnerable Configurations

  • cpe:2.3:o:linux:linux_kernel:5.12:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.12:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.12.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.12.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.12.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.12.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.12.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.12.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.12.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.12.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.12.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.12.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.12.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.12.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*

Protect Your Infrastructure against CVE-2021-47079: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other 5 Recently Published CVEs Vulnerabilities

  • CVE-2025-3858 – The Formality plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘align’ parameter in all versions up to, and including, 1.5...
  • CVE-2025-3748 – The Taxonomy Chain Menu plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's pn_chain_menu shortcode in all versions ...
  • CVE-2025-3709 – Agentflow from Flowring Technology has an Account Lockout Bypass vulnerability, allowing unauthenticated remote attackers to exploit this vulnerabi...
  • CVE-2025-3708 – Le-show medical practice management system from Le-yan has a SQL Injection vulnerability, allowing unauthenticated remote attackers to inject arbit...
  • CVE-2025-3707 – The eHDR CTMS from Sunnet has a SQL Injection vulnerability, allowing remote attackers with regular privileges to inject arbitrary SQL command to r...