Memory Leak Vulnerability in Linux Kernel - CVE-2022-49207
Summary
CVE-2022-49207: In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix memleak in sk_psock_queue_msg If tcp_bpf_sendmsg is running during a tear down operation we may enqueue data on the ingress msg queue... Affects linux versions < 5.17.3-1. Fixed in 5.17.3-1. How to fix ↓
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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. CVE-2022-49207 specifically affects the TCP BPF (Berkeley Packet Filter) functionality, which is used for packet filtering and network traffic management. This vulnerability can lead to memory leaks during socket teardown operations, potentially affecting system performance and stability.
Vulnerability Detail
CVE-2022-49207 is a memory leak vulnerability in the Linux kernel's BPF implementation. It arises when the tcp_bpf_sendmsg function is executed during the teardown of a socket, leading to the enqueuing of data on the ingress message queue while the teardown process attempts to free it. This can result in warnings related to memory management and can cause system instability. The vulnerability is characterized by a specific sequence of function calls that can lead to memory not being properly released, ultimately affecting system performance.
How To Fix
Minimum fixed version
5.17.3-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. The best course of action is to apply the available patch by updating the Linux kernel as described in the 'how_to_fix' section.
Conclusion
CVE-2022-49207 is a significant memory leak vulnerability in the Linux kernel that can impact system performance and stability. It is essential to update to the patched version of the Linux package to ensure your system is secure. Regular monitoring for vulnerabilities using tools like Vulert can help maintain the integrity of your software environment.
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FAQ
CVE-2022-49207 is a memory leak vulnerability in the Linux kernel's BPF implementation that can occur during socket teardown operations.
This vulnerability can lead to memory leaks, potentially causing system instability and performance degradation.
Yes, a patch is available in the fixed version 5.17.3-1 or later of the Linux package.
You can use tools like Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
While there are no specific workarounds, it is crucial to plan for an update as soon as possible to mitigate the risks associated with this vulnerability.
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