CVE-2023-54142 is a deferred vulnerability identified in the Linux kernel concerning a use-after-free condition in the function __gtp_encap_destroy(). This vulnerability allows the same process to free an object and then illegally access it, leading to potential exploitation scenarios. The issue was reported by syzkaller and has been acknowledged in the development community.
The severity of this vulnerability is currently classified as unknown, indicating that further investigation is needed to assess its impact accurately. Notably, use-after-free vulnerabilities often present significant risks as they can lead to memory corruption or arbitrary code execution, thereby posing substantial threats to system integrity.
As of now, the exploitation status remains low, with no confirmed public exploit available. However, security teams should remain aware of this vulnerability and monitor for any developments, given that vulnerabilities of this nature can often be targeted in the wild.
Organizations should prioritize patching immediately to mitigate potential risks associated with this vulnerability. Regular assessments and updates are essential to maintaining robust security postures.
Vulnerability Details
The official description of CVE-2023-54142 indicates that this vulnerability was identified in the Linux kernel and involves a use-after-free condition in the function __gtp_encap_destroy(). The issue arises from improper management of socket references, which can lead to illegal access following a free operation. This vulnerability affects the integrity of the kernel and could potentially lead to system instability or exploitation.
Although the exact CVSS score is not currently available, the implications of use-after-free vulnerabilities are generally severe. The affected product is the Linux kernel, and the vulnerability has been published on December 24, 2025.
Technical Analysis
The root cause of CVE-2023-54142 stems from the improper handling of socket references in the Linux kernel, specifically in the __gtp_encap_destroy() function. The attack vector for this vulnerability is classified as unknown, but typically, use-after-free vulnerabilities can be exploited through local access or adjacent network access.
The attack complexity is assessed as low, indicating that it may be relatively straightforward for an attacker with the requisite access to trigger the vulnerability. Privileges required are also low, as the flaw can potentially be exploited without elevated permissions.
User interaction is not required for exploitation, which increases the risk associated with this vulnerability. The impact on confidentiality, integrity, and availability is significant, as successful exploitation may allow attackers to manipulate memory resources, potentially leading to arbitrary code execution.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2023-54142 includes the potential for attackers to exploit the vulnerability to execute arbitrary code or cause system crashes. Given the widespread use of the Linux kernel in various devices and systems, the blast radius could be extensive, affecting numerous organizations globally.
Organizations should assess the urgency of addressing this vulnerability based on its potential impact. The risk to organizations includes the possibility of unauthorized access and system compromise, which underscores the necessity for timely remediation.
Given the unknown severity status, organizations should approach this vulnerability with caution and ensure that monitoring and protective measures are in place until further details are available.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Specific version information for CVE-2023-54142 is currently not available. Organizations should assume that all versions of the Linux kernel prior to any forthcoming patches may be affected.
Mitigation & Remediation
Organizations should monitor for updates from the Linux kernel development community regarding patches or updates addressing this vulnerability. Implementing regular updates and security patches is vital to mitigating potential risks associated with vulnerabilities like CVE-2023-54142.
In the absence of immediate patches, organizations should also consider implementing additional network controls and monitoring to detect any anomalous behavior that may indicate exploitation attempts.
For further guidance, organizations can refer to our comprehensive resource on penetration testing approaches to validate the effectiveness of their security measures.
Detection Guidance
To effectively detect potential exploitation of this vulnerability, organizations should monitor log indicators for any signs of abnormal socket behavior or memory access violations. Additionally, keeping an eye on behavioral anomalies and unusual network traffic can provide insights into attempts to exploit this weakness.
Establishing network signatures tailored to the specific patterns associated with use-after-free vulnerabilities will also aid in enhancing detection capabilities.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2023-54142 highlights the ongoing challenges associated with memory management in complex systems like the Linux kernel. This vulnerability represents a common pattern that security teams must address to prevent future occurrences.
As vulnerabilities of this nature continue to surface, organizations are reminded of the importance of maintaining robust coding practices and proactive security measures. Continuous penetration testing methodologies should be employed to identify and remediate such weaknesses before they can be exploited.
Moreover, adopting a vulnerability management program can help organizations systematically address vulnerabilities and improve their overall security posture.
Finally, it is crucial for security teams to engage in regular training and awareness programs to effectively respond to emerging threats in a timely manner.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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