In the Linux kernel, a vulnerability has been resolved that allows the addition of a device which is already a team device lower. Specifically, it prevents cases where a device, such as 'veth0', is added if 'vlan1' was already added and 'veth0' is a lower device of 'vlan1'. This situation is not useful in practice and can lead to recursive locking, which may cause system instability.
The vulnerability has a CVSS score of 5.5, indicating a medium severity level. The implications of this vulnerability primarily affect the availability of the system, as it may lead to deadlocks under certain conditions. Organizations utilizing affected versions of the Linux kernel must prioritize remediation to safeguard their systems.
Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability. The Linux community has released patches to address this issue, and it is crucial for system administrators to apply these updates to maintain system integrity.
As of now, there is no known public exploit or proof of concept available for this vulnerability, which may indicate a lower immediate risk of exploitation in the wild. However, organizations are advised to remain vigilant and monitor for any updates regarding this vulnerability.
Vulnerability Details
The vulnerability is classified under CWE-667, which pertains to improper resource shutdown or release. The vulnerability was published on March 6, 2025, and affects various versions of the Linux kernel, as detailed in the configurations section.
Technical Analysis
The root cause of this vulnerability arises from the design flaw in the way devices are added to team devices in the Linux kernel. The attack vector is local, with low complexity and low privileges required for exploitation. No user interaction is needed for the exploitation of this vulnerability.
The impacts on confidentiality and integrity are minimal, as this vulnerability primarily affects the availability of the system. The potential for deadlock can occur due to improper locking mechanisms, leading to a denial of service.
Risk & Impact Analysis
Risk to organizations includes operational disruptions due to the potential for recursive locking, which can lead to system unavailability. Given the medium severity of this vulnerability, organizations should address it in their priority patch cycle. The blast radius may vary, but affected systems may experience significant instability if left unpatched.
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 from 3.3 to prior to 5.4.291, 5.5 to prior to 5.10.235, 5.11 to prior to 5.15.179, 5.16 to prior to 6.1.129, 6.2 to prior to 6.6.76, 6.7 to prior to 6.12.13, and 6.13 to prior to 6.13.2.
Mitigation & Remediation
Organizations should apply the available patches to their systems to remediate this vulnerability. For more information on maintaining security in your Linux environment, consider reviewing our application security assessment practices.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual locking behaviors and system crashes. Behavioral anomalies related to network interface changes may also indicate an attempt to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential to disrupt network operations if left unaddressed. While there are currently no known exploits, it serves as a reminder of the importance of robust update and patch management practices. Security teams should prioritize understanding and addressing vulnerabilities as part of their continuous security posture.
For further insights on vulnerability management, organizations may explore our vulnerability management program resources.
Additionally, reviewing our penetration testing methodology can provide insights into proactive security measures.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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