Vulnerability in Kernel: thermal: core: Fix TZ_GET_TRIP NULL pointer dereference
Summary
GSD-2022-1000710: thermal: core: Fix TZ_GET_TRIP NULL pointer dereference. Affects Kernel versions >= 1ce50e7d408ef2bdc8ca021363fd46d1b8bfad00, < 4c294285cec3964b3291772ac0642c2bf440bd1b. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functions and services to enable the proper functioning of the system. The thermal subsystem within the Kernel is responsible for managing temperature-related aspects of the system, such as thermal zones and trip points. These components play a crucial role in preventing overheating and ensuring the stability of the system.
Vulnerability Detail
The vulnerability identified in the Kernel's thermal subsystem is a NULL pointer dereference issue triggered by the TZ_GET_TRIP operation. This vulnerability allows an attacker to exploit a NULL pointer, leading to a system crash or potential privilege escalation. The issue was introduced in version v5.9 of the Linux Kernel and was fixed in version v5.16.13. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.16.13 or later. This can be done by downloading the updated Kernel source code from the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and following the installation instructions provided. Alternatively, users can wait for their Linux distribution to release an updated package containing the fixed Kernel version.
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Workaround
No specific workaround has been mentioned for this vulnerability.
Conclusion
The vulnerability in the Kernel's thermal subsystem poses a potential risk of system crashes and privilege escalation. It is crucial to update the Linux Kernel to version v5.16.13 or later to mitigate this vulnerability. No specific workaround has been provided. If you have any further questions or need assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can range from a system crash to potential privilege escalation, depending on the attacker's capabilities.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will analyze it for any open-source vulnerabilities, including this one.
As of now, there are no known exploits for this vulnerability. However, it is important to apply the fix as soon as possible to mitigate any potential risks.
The exact attack vector and remote exploitability of this vulnerability have not been determined yet. It is advisable to assume that remote exploitation is possible until further information is available.
For further support on vulnerability remediation and assistance with the fix, you can reach out to info@devnack.com.
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