Memory Leak Vulnerability in Linux Kernel: CVE-2023-53408
Summary
CVE-2023-53408: In the Linux kernel, the following vulnerability has been resolved: trace/blktrace: fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory... Affects linux versions 5.10.103-1 – 6.9.9-1. 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
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
Background
The Linux kernel is the core component of many operating systems, managing hardware resources and providing essential services for software applications. It is known for its stability, performance, and security features. However, like any complex software, it is susceptible to vulnerabilities that can impact system performance and security. CVE-2023-53408 addresses a specific memory leak issue related to the debugfs_lookup() function, which can lead to resource exhaustion over time.
Vulnerability Detail
CVE-2023-53408 is a vulnerability in the Linux kernel that arises from improper handling of memory when using the debugfs_lookup() function. The issue occurs because the result of this function must have dput() called on it to prevent memory leaks. If this is not done, memory will accumulate, potentially leading to system instability and performance degradation. The vulnerability affects multiple Debian versions of the Linux package, making it critical for users to address it promptly.
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
As a workaround, users can avoid using the debugfs_lookup() function directly and instead utilize the debugfs_lookup_and_remove() function, which automatically handles the necessary memory management, thus preventing the memory leak.
Conclusion
CVE-2023-53408 is a significant vulnerability in the Linux kernel that can lead to memory leaks and system instability. It is crucial for users of affected Debian versions to update their Linux packages to the patched version to ensure system security and performance. Utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.
See every vulnerability recorded for linux →
FAQ
CVE-2023-53408 is a vulnerability in the Linux kernel that causes a memory leak due to improper handling of the debugfs_lookup() function.
If left unaddressed, this vulnerability can lead to memory exhaustion, causing system instability and performance issues.
Debian versions 11, 12, 13, and 14 are affected by this vulnerability.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. You can check your application using the Vulert playground without any signup.
As a temporary measure, avoid using the debugfs_lookup() function directly and use debugfs_lookup_and_remove() instead to mitigate the risk of memory leaks.
Related vulnerabilities
Recent vulnerabilities recorded for linux.
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
