netrom: Decrease sock refcount when sock timers expire
Summary
GSD-2021-1001165: netrom: Decrease sock refcount when sock timers expire. Affects Kernel versions >= 63346650c1a94a92be61a57416ac88c0a47c4327, < bc1660206c3723c37ed4d622ad81781f1e987250. No fix is published. How to fix ↓
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Background
The netrom package is a component of the Linux Kernel, which is responsible for implementing the NET/ROM protocol. This protocol is used for amateur packet radio networks and provides reliable data transmission over radio links. The netrom package handles the creation and management of network sockets for NET/ROM communication. However, a vulnerability has been discovered in the netrom package that can lead to a reference count leak when sock timers expire.
Vulnerability Detail
The vulnerability in the netrom package occurs when the sock timers associated with network sockets expire. In this situation, the reference count for the socket is not properly decreased, leading to a reference count leak. This vulnerability can be exploited by an attacker to exhaust system resources and potentially cause a denial-of-service condition. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability was introduced in version v5.0 of the Linux Kernel and has been fixed in version v5.13.6.
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.
Conclusion
The netrom package in the Linux Kernel is vulnerable to a reference count leak when sock timers expire. This vulnerability can potentially lead to a denial-of-service condition. To mitigate the risk, it is recommended to update the kernel to version v5.13.6 or later. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The netrom package is a component of the Linux Kernel that implements the NET/ROM protocol for amateur packet radio networks.
The vulnerability can lead to a reference count leak when sock timers expire, potentially causing a denial-of-service condition.
To fix this vulnerability, update the Linux Kernel to version v5.13.6 or later.
The impact and attack plausibility of this vulnerability have not been proven yet.
For more details, you can refer to the vulnerability ID GSD-2021-1001165 in the GSD database.
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