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Rewterz Threat Advisory – Multiple Google Chrome Vulnerabilities
February 15, 2022
Rewterz Threat Advisory – Multiple IBM Cognos Analytics Mobile for Android Vulnerabilities
February 15, 2022

Rewterz Threat Advisory – CVE-2021-44879 – Linux Kernel Vulnerability

February 15, 2022

Severity

Medium

Analysis Summary

CVE-2021-44879

Linux Kernel is vulnerable to a denial of service, caused by a move_data_page NULL pointer dereference flaw in the gc_data_segment function in fs/f2fs/gc.c. By persuading a victim to mount a specially-crafted image file, a remote attacker could exploit this vulnerability to cause a denial of service condition.

Impact

  • Denial of Service

Indicators of Compromise

CVE

  • CVE-2021-44879

Affected Vendors

Linux

Affected Products

  • Linux Kernel 5.16

Remediation

Upgrade to the latest version of Linux Kernel, available from the Linux Kernel GIT Repository.

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f

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      • Compromise Assessment
      • APT Assessment
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    • Respond
      • Incident Response
      • Incident Analysis
  • Transform
    • SOC Consultancy
    •     SOC Maturity Assessment
    •     SOC Model Evaluation
    •     SOC Gap Analysis
    •     SIEM Gap Analysis
    •     SIEM Optimization
    •     SOC Content Pack
  • Train
    • Security Awareness and Training
    • Tabletop Exercise
    • Simulated Cyber Attack Exercises
  • Managed Security
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      • Remote SOC
      • Onsite SOC
      • Hybrid SOC
    • Managed Security Services
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      • Managed Threat Intelligence
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      • Managed Risk-Based SOAR
      • Managed Penetration Testing
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