Double Free Race Vulnerability in cifs Package
Summary
GSD-2022-1000904: cifs: fix double free race when mount fails in cifs_get_root(). Affects Kernel versions < 2fe0e281f7ad0a62259649764228227dd6b2561d. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The cifs package is a component of the Linux Kernel that provides support for the Common Internet File System (CIFS) protocol. CIFS allows Linux systems to access files and resources on remote Windows servers. It is widely used for network file sharing and provides features such as authentication, file and directory access, and file locking. The cifs package is responsible for handling the mounting and unmounting of CIFS file systems in the Linux Kernel.
Vulnerability Detail
The identified vulnerability, known as GSD-2022-1000904, is a double free race condition that occurs when the mount operation fails in the cifs_get_root() function. This vulnerability can be exploited by an attacker to cause a denial-of-service (DoS) condition or potentially execute arbitrary code with elevated privileges. The double free race condition arises when multiple threads attempt to free the same memory location simultaneously, leading to memory corruption and potential security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. However, users can consider implementing general security best practices such as restricting access to vulnerable systems, applying network segmentation, and monitoring for any suspicious activity.
Conclusion
The double free race vulnerability in the cifs package can lead to a denial-of-service condition or potential execution of arbitrary code with elevated privileges. It is crucial to update the Linux Kernel to version v4.19.233 or later to mitigate this vulnerability. Additionally, implementing general security best practices and monitoring for any suspicious activity can help enhance the overall security of the system. For further support and assistance, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The impact of this vulnerability can range from a denial-of-service (DoS) condition to potential execution of arbitrary code with elevated privileges. However, the actual impact and attack plausibility have not been proven yet.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation. Simply upload your manifest file like package-lock.json to the Vulert playground and it will provide information on any vulnerabilities affecting your software.
Yes, a patch for this vulnerability is available in the Linux Kernel version v4.19.233. It is recommended to update to this version or a later version to mitigate the vulnerability.
There are no known exploits for this vulnerability at the moment. However, it is important to apply the recommended patch or update to mitigate the risk.
If you encounter any issues while applying the fix or have further questions, you can reach out to info@devnack.com for support and assistance.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
