net/tls: Fix tls_sk_proto_close Executed Repeatedly in Linux Kernel
Summary
GSD-2022-1004744: net/tls: fix tls_sk_proto_close executed repeatedly. Affects Kernel versions >= 95fa145479fbc0a0c1fd3274ceb42ec03c042a4a, < 05c6c36c79311d9a00a79f88647f83a7cf009624. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware. The net/tls module in the Linux Kernel provides support for Transport Layer Security (TLS) protocol, enabling secure communication over network connections. However, a vulnerability has been discovered in the net/tls module that allows the tls_sk_proto_close function to be executed repeatedly, leading to potential security issues.
Vulnerability Detail
The vulnerability in the net/tls module arises from the tls_sk_proto_close function being executed multiple times. This can result in various security implications, such as resource exhaustion, memory corruption, or privilege escalation. Attackers may be able to exploit this vulnerability to crash the system, execute arbitrary code, or gain elevated privileges. The vulnerability was introduced in Linux Kernel version 5.3 and has been fixed in version 5.4.202.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to update the Linux Kernel to the fixed version to mitigate the risk.
Conclusion
The net/tls module in the Linux Kernel is vulnerable to a flaw that allows the tls_sk_proto_close function to be executed repeatedly. This can have severe security implications, including resource exhaustion, memory corruption, and privilege escalation. To mitigate the risk, it is essential to update the Linux Kernel to version 5.4.202 or later. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The net/tls module in the Linux Kernel provides support for Transport Layer Security (TLS) protocol, enabling secure communication over network connections.
The vulnerability allows the tls_sk_proto_close function to be executed repeatedly, potentially leading to resource exhaustion, memory corruption, or privilege escalation. Attackers may exploit this vulnerability to crash the system, execute arbitrary code, or gain elevated privileges.
The vulnerability was introduced in Linux Kernel version 5.3 and has been fixed in version 5.4.202.
To fix this vulnerability, update the Linux Kernel to version 5.4.202 or later. Download the latest kernel source code from the official Linux Kernel repository and compile it for your system, or check for available updates in your Linux distribution's package manager.
There is no known workaround for this vulnerability. It is crucial to update the Linux Kernel to the fixed version.
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