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Analyze » Kernel Foundation - Master Linux Kernel & LDD » GOOLIN1783499291

Incident Score: Analysis & Impact (GOOLIN1783499291)

The details regarding individual company incidents & reports gives you full view from every side.

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-5
Company Score Before Incident742 / 1000
Company Score After Incident737 / 1000
Company LinkView Kernel Foundation - Master Linux Kernel & LDD Profile
INCIDENT NUMBERGOOLIN1783499291
Type of Cyber IncidentVulnerability
ATTACK VECTORLocal
DATA EXPOSEDNA
INCIDENT DATE31/03/2026
STATUSPatched

Key Highlights From The Incident Analysis

  • Timeline of Kernel Foundation - Master Linux Kernel & LDD's Vulnerability and lateral movement inside company's environment.
  • Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
  • How Rankiteo’s incident engine converts technical details into a normalized incident score.
  • How this cyber incident impacts Kernel Foundation - Master Linux Kernel & LDD Rankiteo cyber scoring and cyber rating.
  • Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.

Full Incident Analysis Transcript

In this Rankiteo incident briefing, we review the Kernel Foundation - Master Linux Kernel & LDD breach identified under incident ID GOOLIN1783499291.

The analysis begins with a detailed overview of Kernel Foundation - Master Linux Kernel & LDD's information like the linkedin page: https://www.linkedin.com/company/linux-kernel-foundation, the number of followers: 17363, the industry type: Software Development and the number of employees: 15 employees

After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 742 and after the incident was 737 with a difference of -5 which is could be a good indicator of the severity and impact of the incident.

In the next step of the video, we will analyze in more details the incident and the impact it had on Kernel Foundation - Master Linux Kernel & LDD and their customers.

Linux Kernel recently reported "Critical 15-Year-Old Linux Kernel Vulnerability 'GhostLock' Disclosed", a noteworthy cybersecurity incident.

Researchers at Nebula Security uncovered GhostLock (CVE-2026-43499), a severe privilege escalation and container escape vulnerability in the Linux kernel, present since version 2.6.39 (released in 2011).

The disruption is felt across the environment, affecting All Linux systems running kernels from 2.6.39 to 7.1.

In response, moved swiftly to contain the threat with measures like Kernel patch applied, and began remediation that includes Apply Linux kernel patch for CVE-2026-43499.

The case underscores how Patched, teams are taking away lessons such as Long-undetected vulnerabilities in critical software components can have widespread impact. Regular kernel updates and proactive security research are essential for mitigating such risks, and recommending next steps like Apply the Linux kernel patch for CVE-2026-43499 immediately, Enable mitigations like `RANDOMIZE_KSTACK_OFFSET` and `STATIC_USERMODE_HELPER` where patching is not immediately possible and Monitor for signs of exploitation in containerized and shared hosting environments.

Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.

The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.

MITRE ATT&CK® Correlation Analysis

Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Privilege Escalation tactic, the analysis identified Exploitation for Privilege Escalation (T1068) with high confidence (95%), with evidence including severe privilege escalation...vulnerability in the Linux kernel, and achieve arbitrary code execution with root privileges and Abuse Elevation Control Mechanism: Setuid and Setgid (T1548.001) with moderate to high confidence (80%), supported by evidence indicating modifies sysctl permissions (e.g., `/proc/sys/kernel/core_pattern`) to execute binaries with root privileges. Under the Execution tactic, the analysis identified Exploitation for Client Execution (T1203) with high confidence (90%), supported by evidence indicating hijacking kernel function pointers such as the IPv6 UDP protocol handler to gain arbitrary code execution. Under the Defense Evasion tactic, the analysis identified Indicator Removal (T1066) with moderate to high confidence (70%), supported by evidence indicating kASLR bypass via prefetch-timing attacks and Impair Defenses: Disable or Modify Tools (T1562.001) with moderate to high confidence (70%), supported by evidence indicating modifies sysctl permissions (e.g., `/proc/sys/kernel/core_pattern`). Under the Initial Access tactic, the analysis identified Exploitation of Remote Services (T1210) with moderate to high confidence (80%), supported by evidence indicating container escape vulnerability...no elevated privileges or namespaces required. Under the Lateral Movement tactic, the analysis identified Escape to Host (T1611) with high confidence (90%), supported by evidence indicating container escape vulnerability...affects all Linux systems running kernels from 2.6.39 to 7.1. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Privilege Escalation
Exploitation for Privilege Escalation (95%)
Abuse Elevation Control Mechanism: Setuid and Setgid (80%)
Execution
Exploitation for Client Execution (90%)
Defense Evasion
Indicator Removal (70%)
Impair Defenses: Disable or Modify Tools (70%)
Initial Access
Exploitation of Remote Services (80%)
Lateral Movement
Escape to Host (90%)

Sources & References