Out-of-bounds bug in ngene_command_config_free_buf() in Kernel
Summary
GSD-2021-1001465: media: ngene: Fix out-of-bounds bug in ngene_command_config_free_buf(). Affects Kernel versions >= dae52d009fc950b5c209260d50fcc000f5becd3c, < 4487b968e5eacd02c493303dc2b61150bb7fe4b2. 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 functionalities such as device drivers, memory management, and process scheduling. The ngene module within the Kernel is responsible for handling media-related operations. However, a vulnerability has been discovered in the ngene_command_config_free_buf() function, which can lead to an out-of-bounds bug.
Vulnerability Detail
The ngene_command_config_free_buf() function in the ngene module of the Kernel suffers from an out-of-bounds bug. This vulnerability was introduced in version v2.6.34 and affects all subsequent versions until it was fixed in v4.4.277. An attacker could potentially exploit this bug to execute arbitrary code or cause a denial-of-service (DoS) condition. The bug occurs when processing certain configuration commands, leading to a buffer overflow. This can result in memory corruption and potentially allow an attacker to gain control over the affected system.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable the ngene module to mitigate the risk of exploitation. This can be achieved by blacklisting the module or removing it from the Kernel configuration. However, this workaround may impact media-related functionalities that rely on the ngene module.
Conclusion
The out-of-bounds bug in ngene_command_config_free_buf() within the Kernel can pose a significant security risk, potentially allowing attackers to execute arbitrary code or cause a denial-of-service condition. It is crucial to update the Linux Kernel to version v4.4.277 or later, which includes the necessary fix. Users can also utilize Vulert's playground at https://vulert.com/scanner to check if their system is affected by this vulnerability. For further assistance and guidance, please contact DevNack.com.
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FAQ
The vulnerability can potentially allow an attacker to execute arbitrary code or cause a denial-of-service (DoS) condition. It may also lead to memory corruption and compromise the security and stability of 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 software.
At the time of this report, there is no known public exploit for this vulnerability. However, it is essential to apply the recommended fix to ensure the security of your system.
As a temporary mitigation, users can disable the ngene module by blacklisting it or removing it from the Kernel configuration. However, this may impact media-related functionalities that rely on the ngene module. It is recommended to apply the official fix by updating the Linux Kernel.
You can find more information about this vulnerability in the official Linux Kernel repository. Additionally, you can reach out to info@devnack.com for further support on vulnerability remediation.
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