Vulnerability in drm/rockchip package: Possible Null Pointer Dereference in vop_bind()
Summary
GSD-2022-1003917: drm/rockchip: vop: fix possible null-ptr-deref in vop_bind(). Affects Kernel versions >= 2048e3286f347db5667708e47448176b5329e8d8, < 6ff986e057bf28e2f7690dad410768b2270f9453. 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 package includes various drivers and functions to enable proper display functionality on these devices. However, a vulnerability has been identified in the vop_bind() function of the package, which could lead to a null pointer dereference.
Vulnerability Detail
The vulnerability in the drm/rockchip package arises from a possible null pointer dereference in the vop_bind() function. This function is responsible for binding a display controller to a display pipeline. If a null pointer is encountered during the binding process, it can lead to a crash or other unexpected behavior. An attacker could potentially exploit this vulnerability to cause a denial-of-service (DoS) attack or execute arbitrary code. The vulnerability was introduced in version v3.19 of the Linux Kernel and has been fixed in version v4.19.247.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can apply the patch manually to their existing kernel version. Here is an example of how to apply the patch:
- Download the patch file from the Linux Kernel repository.
- Navigate to the kernel source directory.
- Apply the patch using the
patchcommand:patch -p1 < path/to/patch.file - Recompile and reinstall the kernel.
Please note that applying patches manually can be complex and error-prone. It is recommended to update to the latest kernel version instead.
Conclusion
In conclusion, the drm/rockchip package in the Linux Kernel is vulnerable to a null pointer dereference in the vop_bind() function. This vulnerability can potentially lead to crashes, DoS attacks, or arbitrary code execution. It is crucial to update the Linux Kernel to version v4.19.247 or later to mitigate this vulnerability. Users can also apply the provided patch manually as a temporary workaround. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability could lead to a crash or other unexpected behavior in systems utilizing the drm/rockchip package. An attacker could potentially exploit this vulnerability to cause a denial-of-service (DoS) attack or execute arbitrary code.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your application or system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) to the playground, and it will provide real-time alerts for open-source vulnerabilities.
At the time of this report, there is no known public exploit for this vulnerability. However, it is important to apply the necessary updates or patches to mitigate the risk.
The primary mitigation for this vulnerability is to update the Linux Kernel to version v4.19.247 or later. Additionally, users can apply the provided patch manually as a temporary workaround.
This vulnerability was discovered by an automated security analysis tool and reported to the Linux Kernel development team.
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