CVE-2022-45887 is a memory leak vulnerability discovered in the Linux kernel, specifically affecting versions up to 6.0.9. The vulnerability arises from a missing call to dvb_frontend_detach in the file drivers/media/usb/ttusb-dec/ttusb_dec.c. This could potentially lead to a memory leak that affects system stability.
The vulnerability has a CVSS score of 4.7, categorizing it as a medium severity issue. This score indicates that while the attack complexity is high, the potential availability impact is significant, necessitating prompt attention from affected organizations.
Organizations using affected versions of the Linux kernel should prioritize remediation. Given that the exploitability score is moderate and no known exploits have been confirmed, immediate action to patch the vulnerability is recommended.
Failure to address this vulnerability could lead to degraded performance or outages, underscoring the importance of maintaining vigilance in system administration and security practices.
CVE-2022-45887 is described as an issue in the Linux kernel through 6.0.9, where a memory leak occurs due to the absence of a dvb_frontend_detach call in the source code. This vulnerability corresponds to the Common Weakness Enumeration (CWE) identifiers CWE-362 (Race Condition) and CWE-772 (Missing Release of Resource after Effective Lifetime).
The vulnerability affects various products, including the Linux kernel and several NetApp firmware versions, including h410c, h300s, h500s, h700s, and h410s.
The publication date of this CVE was November 25, 2022, and it is classified as modified due to updates in the vulnerability status.
The root cause of CVE-2022-45887 lies in the failure to properly detach resources in the Linux kernel's USB driver. This issue manifests as a memory leak, which can lead to excessive memory consumption over time.
The attack vector is local, requiring an attacker to have local access to the system. Given the high attack complexity, it is not trivial for attackers to exploit this vulnerability without appropriate privileges.
Privileged access is required to exploit this vulnerability, as the attacker needs to interact with the kernel's USB subsystem directly. User interaction is not required for exploitation.
The risk to organizations includes potential service interruptions and degraded performance due to memory leaks. With the availability impact rated as high, systems may become unstable if the vulnerability is not addressed.
Given that this vulnerability affects core components of the Linux kernel, the blast radius is significant, particularly for organizations that rely on Linux-based infrastructures.
Organizations should prioritize patching immediately, as the availability impacts could lead to downtime and loss of productivity.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
All versions of the Linux kernel prior to vendor patch 6.0.9 are affected. Additionally, several NetApp firmware versions including h410c, h300s, h500s, h700s, and h410s are also vulnerable.
To remediate this vulnerability, ensure that your systems are updated to the latest version of the Linux kernel. Organizations should also consider implementing configuration hardening practices to minimize the potential attack surface.
If immediate patching is not feasible, organizations may need to employ network controls to restrict access to vulnerable systems and monitor for unusual activity.
Continuous penetration testing can also help identify similar weaknesses in the environment.
Organizations should monitor log indicators for abnormal memory usage patterns that could indicate the presence of this vulnerability. Additionally, system performance monitoring can help identify potential resource leaks.
Behavioral anomalies in application performance may also signify that this vulnerability is being exploited.
The long-term significance of CVE-2022-45887 lies in its representation of a common issue in kernel development, where resource management is crucial. It highlights the need for rigorous code reviews and testing to prevent similar vulnerabilities in the future.
Security teams should be aware of patterns where memory leaks can lead to availability impacts, reinforcing the importance of effective resource management in software development.
To mitigate risks, organizations should adopt best practices, such as integrating security into the development lifecycle and conducting regular security assessments, including vulnerability management programs, to identify and address weaknesses proactively.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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