A race condition was found in the Linux kernel's Bluetooth device driver in the {min,max}_key_size_set() function. This vulnerability allows a potential null pointer dereference issue, which could lead to a kernel panic or denial of service.
The CVSS score of 4.6 indicates a medium severity level, emphasizing the importance of addressing this vulnerability to prevent potential disruptions. Organizations utilizing affected Linux kernel versions should recognize the risk to their operational stability.
Currently, there are no public exploits confirmed for this vulnerability. However, the complexity of the attack is classified as high, requiring significant privileges and user interaction, which may limit its immediate exploitability.
Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability.
Vulnerability Details
The official description states that a race condition was found in the Linux kernel's Bluetooth device driver in the {min,max}_key_size_set() function. This can result in a null pointer dereference issue, possibly leading to a kernel panic or denial of service issue.
The vulnerability is classified under CWE-362 and CWE-476, indicating the types of issues that may arise due to this flaw. The CVSS score from NVD is 5.3, demonstrating the potential impact on availability, which is assessed as high.
The vulnerability affects the Linux kernel versions up to 5.5.19 and from 6.0 to 6.7.2, necessitating immediate remediation steps.
Technical Analysis
The root cause of this vulnerability is a race condition within the Bluetooth device driver of the Linux kernel. This condition arises when multiple processes access shared resources without proper synchronization.
The attack vector is classified as adjacent network, meaning that an attacker must be on the same local network to exploit this vulnerability. The attack complexity is high, requiring elevated privileges and user interaction.
In terms of impact, the confidentiality impact is rated high, while integrity impact is low. Availability impact is non-existent, which is critical for operational environments relying on the stability of the Linux kernel.
Risk & Impact Analysis
Risk to organizations includes operational disruptions due to potential kernel panics. The blast radius of this vulnerability can be significant, especially in environments where the Linux kernel is widely utilized.
Given the CVSS score of 4.6, organizations should address this vulnerability in their priority patch cycle. The presence of a race condition can lead to complex exploitation scenarios, making it imperative for security teams to remain vigilant.
Organizations should schedule remediation to ensure that any existing vulnerabilities are patched promptly.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects Linux kernel versions up to 5.5.19 and from 6.0 to 6.7.2. Organizations should ensure they are running patched versions to mitigate risks.
Mitigation & Remediation
Organizations should apply the latest patches provided by Linux for the kernel. If patches are not immediately available, workarounds should be implemented to limit access to the Bluetooth device until the issue is remediated.
Configuration hardening should also be considered to minimize exposure to the vulnerable components. Regular monitoring and review of system logs can help detect any unusual activity related to this vulnerability.
For additional guidance, organizations can explore resources on penetration testing to validate the effectiveness of their remediation efforts.
Detection Guidance
Security teams should monitor logs for indicators of abnormal Bluetooth interactions, which may indicate attempts to exploit this vulnerability. Behavioral anomalies in system performance may also highlight potential issues.
Network signatures that indicate unusual traffic patterns related to Bluetooth communications should be established to enhance detection capabilities.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its representation of how race conditions can impact system stability and security, especially in critical infrastructure.
Security teams should take note of the patterns this vulnerability represents and ensure that robust testing practices are in place to catch similar issues in the future.
For further insights, organizations can refer to the following resources: penetration testing methodology, vulnerability management program, and cloud penetration testing to strengthen their security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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