Vulnerability in Linux Kernel: net: ethernet: dec: tulip: de4x5
Summary
GSD-2021-1002360: net: ethernet: dec: tulip: de4x5: fix possible array overflows in type3_infoblock(). Affects Kernel versions < 9a3af2f11bb7a50dcdcdfb98a687831dd75768e8. No fix is published. How to fix ↓
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Background
The Linux Kernel is a critical component of the Linux operating system, responsible for managing system resources and providing an interface between hardware and software. It includes various subsystems, including the network stack. The net: ethernet: dec: tulip: de4x5 driver is part of the kernel's network subsystem and is used for handling Ethernet connections. This driver is vulnerable to potential array overflows in the type3_infoblock() function.
Vulnerability Detail
The vulnerability in the net: ethernet: dec: tulip: de4x5 driver arises from possible array overflows in the type3_infoblock() function. If exploited, an attacker could potentially trigger these overflows, leading to memory corruption and potential code execution. The impact and attack plausibility of this vulnerability have not been proven yet. However, it is crucial to address this issue to prevent any potential security breaches.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As this vulnerability is fixed in a later version of the Linux Kernel, applying the update is the recommended solution. However, if updating is not immediately feasible, a possible workaround is to disable or remove the net: ethernet: dec: tulip: de4x5 driver from the kernel configuration. This can be achieved by modifying the kernel configuration file and rebuilding the kernel without including this driver.
Conclusion
The vulnerability in the net: ethernet: dec: tulip: de4x5 driver of the Linux Kernel can potentially lead to memory corruption and code execution. It is crucial to update the kernel to version v4.4.294 or later to address this vulnerability. If immediate updating is not possible, the provided workaround of disabling or removing the driver can be applied. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
If exploited, this vulnerability could lead to memory corruption and potential code execution, potentially allowing an attacker to gain unauthorized access or perform malicious actions on the affected system.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities in the software, without requiring access to the code or installation.
At the time of this report, there is no known exploit for this vulnerability. However, it is important to address the issue promptly by applying the recommended fix or workaround to mitigate any potential risks.
Yes, if updating the kernel is not immediately feasible, you can apply the provided workaround by disabling or removing the net: ethernet: dec: tulip: de4x5 driver from the kernel configuration. This will help mitigate the vulnerability until the kernel update can be applied.
You can find more information about this vulnerability, including the fix and its impact, in the vulnerability database entry at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002360.json.
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