In the Linux kernel, a high-severity vulnerability has been identified, classified as a use-after-free issue. This vulnerability allows an attacker with local access to exploit the system, potentially leading to significant risks. The CVSS score of 7.8 indicates a high level of severity, necessitating urgent action from organizations to mitigate the risks associated with this vulnerability. The vulnerability has been confirmed to affect various versions of the Linux kernel.
Risk to organizations includes potential unauthorized access to sensitive information and disruption of services, as the vulnerability impacts confidentiality, integrity, and availability. Given the existing threat landscape, it is crucial for organizations to address this vulnerability in their patch management processes.
Organizations should prioritize patching immediately. The vulnerability was published on February 27, 2025, and has since been modified. It is vital to ensure that systems running affected versions of the Linux kernel are updated promptly to mitigate the associated risks.
The vulnerability has not been actively exploited in the wild, but the potential for exploitation remains high. It is essential for security teams to remain vigilant and monitor for any signs of attempted exploitation related to this vulnerability.
Vulnerability Details
The official description outlines that this vulnerability is a use-after-free issue within the Linux kernel, specifically related to the pps device handling. The issue arises when the pps_device is freed while the character device (cdev) associated with it is still callable. This can lead to kernel panics and other corruption symptoms, indicating a significant flaw in the handling of device lifecycles.
The vulnerability has a CVSS score of 7.8, classified as high severity. The attack vector is local, meaning that an attacker needs local access to exploit this vulnerability. The attack complexity is low, and it requires low privileges, making it easier for an attacker to carry out an exploit.
The affected products include various versions of the Linux kernel, with the vulnerability impacting confidentiality, integrity, and availability. The Common Weakness Enumeration (CWE) classification for this vulnerability is CWE-416, which pertains to use-after-free vulnerabilities.
Technical Analysis
The root cause of this vulnerability lies in the improper management of device lifecycles in the Linux kernel, particularly in the context of the pps device. When the pps_device_destruct function is called, it frees the device while the associated character device is still callable. This leads to potential access to freed memory, which can be exploited by an attacker.
The attack vector is local, requiring an attacker to have access to the affected system. The attack complexity is low, meaning that it can be exploited easily without any significant barriers. The privileges required are low, allowing even standard users to potentially exploit this vulnerability.
User interaction is not required for exploitation, making it a critical concern for system administrators. The impacts of successful exploitation include a high impact on confidentiality, integrity, and availability of the system.
Risk & Impact Analysis
The real-world deployment risk of this vulnerability is significant, especially for organizations relying on Linux systems for critical operations. The potential for unauthorized access to sensitive information, disruption of services, and system crashes due to kernel panics poses a substantial risk.
Organizations need to consider the blast radius of this vulnerability. Given that many systems may run affected versions of the Linux kernel, the impact could extend across various departments and functions, increasing the urgency of addressing this vulnerability.
The urgency assessment based on the CVSS score indicates that organizations should be treating this vulnerability with high priority. Additionally, the lack of known active exploitation does not diminish the need for immediate action, as the potential for exploitation remains a concern.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of the Linux kernel include all versions starting from 3.2.40 up to the latest ones before the vendor patch. Specific vulnerable versions include 3.2.40 to 3.3, 3.4.87 to 3.5, 3.8.1 to 5.4.291, 5.5 to 5.10.235, 5.11 to 5.15.179, 5.16 to 6.1.129, and 6.2 to 6.6.76, as well as 6.7 to 6.12.13.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply the latest patches provided by the Linux team. Ensure that all systems running the Linux kernel are updated to the latest stable version. In cases where immediate patching is not possible, consider implementing workarounds such as restricting access to sensitive components and enhancing monitoring of system logs for suspicious activities.
For configuration hardening, organizations should review and restrict kernel parameters that may be exploited. Applying network controls to limit access to affected devices can also help mitigate risks. Continuous security testing, such as continuous penetration testing should be conducted to ensure that the systems remain secure against potential exploitation.
Detection Guidance
Organizations should monitor logs for indicators of exploitation, such as abnormal behavior from the gpsd service or related processes. Detection of kernel panics and frequent restarts of the affected system may also indicate attempts to exploit this vulnerability.
Behavioral anomalies associated with device management can also signal exploitation attempts. Implementing network signatures to detect unauthorized access to pps devices will help organizations maintain vigilance against exploitation.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of robust device lifecycle management in the Linux kernel. The trend of vulnerabilities related to improper resource management continues to pose significant risks, emphasizing the need for stringent testing and validation processes. Security teams should proactively monitor their systems and implement best practices for device management to avoid similar vulnerabilities.
For more comprehensive insights into vulnerability management and the importance of regular security assessments, organizations can refer to resources like the vulnerability management program and the penetration testing methodology guides available.
By learning from the patterns of vulnerabilities like CVE-2024-57979, organizations can better prepare for future threats and ensure the security of their systems.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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