Vulnerability in drm/rockchip package: Possible Null Pointer Dereference in vop_bind()
Summary
GSD-2022-1004083: drm/rockchip: vop: fix possible null-ptr-deref in vop_bind(). Affects Kernel versions >= 2048e3286f347db5667708e47448176b5329e8d8, < 452922955df215a417c80d09dab72bbc667a1861. No fix is published. How to fix ↓
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Background
The drm/rockchip package is a component of the Linux Kernel that provides support for Rockchip display controllers. These display controllers are commonly found in Rockchip-based devices such as tablets and embedded systems. The vop_bind() function within the package is responsible for binding the display controller to the display pipeline. However, a vulnerability has been identified in this function that could lead to a null pointer dereference.
Vulnerability Detail
The vulnerability in the vop_bind() function of the drm/rockchip package allows for a potential null pointer dereference. This means that under certain conditions, the function may attempt to access memory using a null pointer, leading to a crash or potential code execution. The vulnerability was introduced in version v3.19 of the Linux Kernel and has been fixed in version v4.9.318. The impact and attack plausibility of this vulnerability have not yet been proven.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, developers can modify the vop_bind() function to include a null pointer check before accessing the memory. Here is an example of the modified code:
void vop_bind()
{
if (vop == NULL) {
return;
}
// Original code here
}
Conclusion
In conclusion, the drm/rockchip package in the Linux Kernel is vulnerable to a possible null pointer dereference in the vop_bind() function. This vulnerability can be fixed by updating the Kernel to version v4.9.318 or later. As a temporary workaround, developers can modify the vop_bind() function to include a null pointer check. It is recommended to apply the necessary updates and patches to ensure the security of your system. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, if successfully exploited, it could lead to a crash or potential code execution.
You can use Vulert's playground at Vulert 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 this report, there are no known exploits for this vulnerability. However, it is always recommended to apply security patches and updates as soon as they become available.
The remote exploitability of this vulnerability has not been determined. However, it is always best practice to apply security updates to mitigate any potential risks.
For more details about this vulnerability, including the specific commits that introduced and fixed it, you can refer to the vulnerability database entry at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1004xxx/GSD-2022-1004083.json.
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