Vulnerability in vsock package: Removal from connected table when connect is interrupted by a signal
Summary
GSD-2022-1000347: vsock: remove vsock from connected table when connect is interrupted by a signal. Affects Kernel versions >= d021c344051af91f42c5ba9fdedc176740cbd238, < 5f326fe2aef411a6575628f92bd861463ea91df7. No fix is published. How to fix ↓
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Background
The vsock package is a component of the Linux Kernel. It provides a communication interface between virtual machines and the host system. It allows for efficient communication between different virtual machines and the host, enabling various virtualization technologies. The vsock package is an essential part of the Linux Kernel and is widely used in virtualization environments.
Vulnerability Detail
The vulnerability in the vsock package occurs when a connect operation is interrupted by a signal. In such cases, the vsock remains in the connected table, potentially leading to resource leaks and other issues. An attacker could exploit this vulnerability to cause denial of service or potentially execute arbitrary code. The vulnerability was introduced in version v3.9 of the Linux Kernel and has been fixed in version v5.4.181.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can avoid the vulnerability by ensuring that the connect operation is not interrupted by a signal. This can be achieved by handling signals appropriately in the application code that utilizes the vsock package. By preventing signal interruptions during the connect operation, the vulnerability can be mitigated.
Conclusion
The vsock package in the Linux Kernel is vulnerable to a flaw that allows vsock to remain in the connected table when connect is interrupted by a signal. This vulnerability can lead to resource leaks and potential security risks. It is recommended to update the Linux Kernel to version v5.4.181 or later to address this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vsock package is a component of the Linux Kernel that provides a communication interface between virtual machines and the host system.
The vulnerability can lead to resource leaks and potentially allow attackers to cause denial of service or execute arbitrary code.
Updating the Linux Kernel to version v5.4.181 or later will fix this vulnerability.
Yes, users can prevent the vulnerability by ensuring that the connect operation is not interrupted by a signal.
The vulnerability was introduced in version v3.9 of the Linux Kernel and fixed in version v5.4.181.
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