Memory Leak Vulnerability in Linux Kernel's ksmbd Component - CVE-2023-32255
Summary
CVE-2023-32255: A flaw was found in the Linux kernel's ksmbd component. Affects linux versions < 6d7cb549c2ca20e1f07593f15e936fd54b763028. 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 Linux kernel is the core component of many operating systems, responsible for managing hardware and system resources. The ksmbd component of the Linux kernel provides SMB (Server Message Block) protocol support, enabling file sharing and printer services over a network. This component is crucial for interoperability between Linux and Windows systems. However, it is susceptible to vulnerabilities that can lead to resource exhaustion, affecting system stability and performance.
Vulnerability Detail
CVE-2023-32255 is a vulnerability found in the ksmbd component of the Linux kernel, where a memory leak can occur if a client sends a session setup request with an unknown NTLMSSP message type. This flaw can lead to resource exhaustion, potentially causing denial of service as the system runs out of memory. The vulnerability is introduced from version 0 and affects various Debian distributions, with fixes available in specific versions.
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
Currently, there are no specific workarounds mentioned for this vulnerability. However, monitoring and limiting access to the ksmbd service can help mitigate potential exploitation until a patch is applied.
Conclusion
CVE-2023-32255 represents a significant vulnerability in the Linux kernel's ksmbd component, which can lead to memory leaks and resource exhaustion. It is crucial for users of affected Debian systems to apply the necessary updates to mitigate this risk. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
See every vulnerability recorded for linux →
FAQ
CVE-2023-32255 is a vulnerability in the Linux kernel's ksmbd component that can lead to a memory leak and resource exhaustion.
The vulnerability affects Debian 11, Debian 12, and Debian 13 systems running the Linux kernel.
You can use the Vulert platform to check if your application is affected by this vulnerability without requiring access to the code or installation.
The CVSS score of CVE-2023-32255 is 5.3, indicating a moderate level of severity.
To apply the patch, update your Linux package to the latest version using the command: sudo apt-get update && sudo apt-get install linux.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
