Memory Leak in sk_psock_queue_msg in Kernel
Summary
GSD-2022-1001206: bpf, sockmap: Fix memleak in sk_psock_queue_msg. Affects Kernel versions >= 9635720b7c88592214562cb72605bdab6708006c, < 03948ed6553960db62f1c33bec29e64d7c191a3f. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionalities and manages system resources. It acts as an interface between the hardware and software layers, allowing applications to communicate with the underlying hardware. The sk_psock_queue_msg function is responsible for queuing messages in the socket map subsystem. This vulnerability in the function can lead to a memory leak, causing a gradual depletion of available memory resources.
Vulnerability Detail
The vulnerability arises due to a memory leak in the sk_psock_queue_msg function of the Kernel. When messages are queued in the socket map subsystem, memory is allocated to store these messages. However, due to an error in the code, this memory is not properly deallocated after the messages are processed, resulting in a memory leak. Over time, this can lead to a significant depletion of available memory, potentially causing system instability or denial of service.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability. The recommended approach is to update the Kernel to the fixed version.
Conclusion
In conclusion, the memory leak vulnerability in the sk_psock_queue_msg function of the Kernel can lead to a gradual depletion of available memory resources. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v5.17.2 or later. This will ensure proper deallocation of memory and prevent any potential memory leaks. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The vulnerability can lead to a memory leak, causing a gradual depletion of available memory resources. This can result in system instability or denial of service.
You can check if your system is affected by this vulnerability by verifying the version of the Linux Kernel installed. If the version is earlier than v5.17.2, your system may be vulnerable.
At the time of this report, there are no known exploits for this vulnerability. However, it is important to promptly update the Kernel to the fixed version to mitigate any potential risks.
This vulnerability does not have a specific remote exploitation vector mentioned. However, it is always recommended to keep the Kernel up to date to protect against potential remote attacks.
For more details about this vulnerability, you can refer to the provided references link. It contains information about the specific commits in the Linux Kernel repository that address this issue.
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