netrom: Decrease sock refcount when sock timers expire
Summary
UVI-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 part of the Linux Kernel ecosystem. It provides support for the NET/ROM protocol, which is used for amateur packet radio networking. The package includes various functionalities and features for handling network sockets and timers. However, a vulnerability has been discovered in the package that can lead to potential security risks.
Vulnerability Detail
The vulnerability in netrom arises from a failure to decrease the socket reference count when socket timers expire. This can result in a reference leak, potentially leading to resource exhaustion and denial-of-service attacks. 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. The recommended approach is to apply the fix by updating the Linux Kernel to the latest version.
Conclusion
The netrom package in the Linux Kernel is vulnerable to a reference leak when sock timers expire. This can potentially lead to resource exhaustion and denial-of-service attacks. It is recommended to update the Linux Kernel to version v5.13.6 or later to fix this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
Netrom is a package in the Linux Kernel ecosystem that provides support for the NET/ROM protocol used in amateur packet radio networking.
The impact of this vulnerability is not yet proven, but it has the potential to lead to resource exhaustion and denial-of-service attacks.
To fix this vulnerability, update the Linux Kernel to version v5.13.6 or later, which includes the necessary fix commit.
Yes, this vulnerability was introduced in version v5.0 of the Linux Kernel.
You can find more information about this vulnerability in the Open Source Vulnerability Database (OSVDB) with the ID UVI-2021-1001165.
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