ARM: davinci: da850-evm: Avoid NULL pointer dereference in Kernel
Summary
GSD-2022-1001644: ARM: davinci: da850-evm: Avoid NULL pointer dereference. Affects Kernel versions >= bae105879f2f2404155da6f50b3636193d228a62, < 0940795c6834fbe7705acc5c3d4b2f7a5f67527a. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential services, such as device drivers, memory management, and process scheduling. The ARM architecture is widely used in embedded systems, including the davinci da850-evm board. This vulnerability specifically affects the da850-evm board, which is based on the ARM davinci platform. The vulnerability involves a NULL pointer dereference issue, which can lead to a system crash or potential exploitation by an attacker.
Vulnerability Detail
The vulnerability arises due to a NULL pointer dereference in the ARM davinci da850-evm board. When certain conditions are met, a NULL pointer is accessed, causing the system to crash or potentially allowing an attacker to execute arbitrary code. The impact and attack plausibility of this vulnerability have not been proven yet, but it is essential to address it to ensure system stability and security. The vulnerability was introduced in Linux Kernel version v2.6.33 and has been fixed in version v5.15.35 by commit 0940795c6834fbe7705acc5c3d4b2f7a5f67527a.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can avoid triggering the NULL pointer dereference by avoiding the specific conditions that lead to the vulnerability. However, this may not be a feasible solution in all cases, and it is strongly recommended to apply the official fix as soon as possible.
Conclusion
The ARM davinci da850-evm board is vulnerable to a NULL pointer dereference issue in the Linux Kernel. This vulnerability can lead to system crashes or potential exploitation by attackers. It is crucial to update the Kernel to version v5.15.35 or later to mitigate this vulnerability. In the meantime, users can follow the provided workaround to minimize the risk. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can range from a system crash to potential execution of arbitrary code by an attacker.
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 Vulert will analyze it for any open-source vulnerabilities, including this one.
At the time of writing, there is no known exploit for this vulnerability. However, it is crucial to apply the fix to prevent any potential exploitation in the future.
As a temporary workaround, you can avoid triggering the vulnerability by avoiding the specific conditions that lead to the NULL pointer dereference. However, it is strongly recommended to apply the official fix as soon as possible.
You can find more information about this vulnerability, including the fix commit and affected versions, in the vulnerability database entry: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1001xxx/GSD-2022-1001644.json
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