Memory Leak Vulnerability in Linux Kernel - CVE-2023-53200
Summary
CVE-2023-53200: In the Linux kernel, the following vulnerability has been resolved: netfilter: x_tables: fix percpu counter block leak on error path when creating new netns Here is the stack where we allocate percpu counter block: +-< a... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, providing essential services for hardware and software interactions. It is known for its stability, performance, and security features. However, like any complex software, it can have vulnerabilities. CVE-2023-53200 specifically affects the netfilter component of the Linux kernel, which is responsible for packet filtering and network address translation. This vulnerability could lead to memory leaks under specific error conditions, potentially affecting system performance.
Vulnerability Detail
CVE-2023-53200 is a vulnerability in the Linux kernel's netfilter subsystem, specifically related to the x_tables component. The issue arises when a percpu counter block is allocated during the creation of a new network namespace. If the registration of the table fails, the allocated memory for the counter block is not freed, leading to a memory leak. Although the probability of encountering this error path is low, as it typically occurs only under specific conditions (e.g., memory allocation failures), it is crucial to address this issue to prevent potential resource exhaustion over time.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. It is advisable to apply the patch as soon as it becomes available to mitigate any potential risks.
Conclusion
CVE-2023-53200 is a significant vulnerability in the Linux kernel that can lead to memory leaks under specific conditions. It is crucial for users of affected Debian versions to update their systems to the patched version to mitigate potential risks. Regular monitoring and timely updates are essential for maintaining system security.
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FAQ
CVE-2023-53200 is a vulnerability in the Linux kernel that can lead to memory leaks in the netfilter subsystem under certain error conditions.
If exploited, this vulnerability could lead to increased memory usage over time, potentially degrading system performance.
The vulnerability affects Debian versions 11, 12, 13, and 14. Check your version and update accordingly.
You can use Vulert, which monitors open-source vulnerabilities in your software. Visit Vulert Scanner to check your application without needing to sign up.
While there are no specific workarounds, it is essential to monitor your system's memory usage and apply the patch as soon as possible.
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