netrom: Decrease sock refcount when sock timers expire
Summary
GSD-2021-1001310: netrom: Decrease sock refcount when sock timers expire. Affects Kernel versions >= 63346650c1a94a92be61a57416ac88c0a47c4327, < 25df44e90ff5959b5c24ad361b648504a7e39ef3. 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 networks. The package includes functionality for handling network sockets and timers. However, a vulnerability has been discovered in the package that can lead to a reference count leak when sock timers expire.
Vulnerability Detail
The vulnerability in netrom arises from a failure to decrease the reference count of a socket when its timers expire. This can result in a reference count leak, potentially leading to resource exhaustion and denial of service attacks. The vulnerability was introduced in version v5.0 of the Linux Kernel and has been fixed in version v5.4.136. The impact and attack plausibility of this vulnerability have not been proven yet.
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. It is recommended to update the Linux Kernel to version v5.4.136 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The netrom package is a component of the Linux Kernel that provides support for the NET/ROM protocol used in amateur packet radio networks.
The vulnerability can lead to a reference count leak, potentially resulting in resource exhaustion and denial of service attacks.
To fix this vulnerability, update the Linux Kernel to version v5.4.136 or later.
The vulnerability was introduced in version v5.0 of the Linux Kernel.
Yes, the vulnerability has been fixed in version v5.4.136 of the Linux Kernel.
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