Memory Leak in imx_pd_connector_get_modes in drm/imx
Summary
GSD-2022-1001687: drm/imx: Fix memory leak in imx_pd_connector_get_modes. Affects Kernel versions >= 76ecd9c9fb24b014a6f33fbb1287ede3be12158b, < 31e449302ed00c38d4068443cf0243279701ab28. No fix is published. How to fix ↓
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Background
The drm/imx module is a component of the Linux Kernel that provides support for display controllers found in i.MX SoCs. It enables the management and configuration of display connectors, modes, and related functionality. The imx_pd_connector_get_modes function is responsible for retrieving the supported display modes for a given connector. However, a memory leak vulnerability exists in this function, which can lead to the exhaustion of system resources over time.
Vulnerability Detail
The memory leak vulnerability in imx_pd_connector_get_modes arises from a failure to release allocated memory when an error condition occurs during the retrieval of display modes. This can result in a gradual depletion of available memory, potentially leading to system instability or denial of service. The vulnerability was introduced in version v4.8 of the Linux Kernel and was fixed in version v5.15.34. The impact and attack plausibility of this vulnerability have not been proven.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can avoid the memory leak by refraining from using the imx_pd_connector_get_modes function or by implementing their own memory release mechanism after calling the function. However, it is strongly advised to apply the official fix by updating the Linux Kernel to the recommended version.
Conclusion
The memory leak vulnerability in imx_pd_connector_get_modes can pose a risk to system stability and availability. It is crucial to update the Linux Kernel to version v5.15.34 or later, which includes the necessary fix. Users can also consider implementing the provided workaround until the update is applied. Regularly checking for vulnerability alerts and utilizing tools like Vulert can help ensure the timely detection and mitigation of open-source vulnerabilities.
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FAQ
The memory leak vulnerability in imx_pd_connector_get_modes can lead to the gradual depletion of system resources, potentially resulting in system instability or denial of service.
Users can check their Linux Kernel version and compare it to the affected and fixed versions mentioned in the vulnerability details. Additionally, vulnerability scanning tools like Vulert can provide real-time alerts for open-source vulnerabilities.
At the time of this report, no known exploits for this vulnerability have been documented. However, it is important to apply the recommended fix to mitigate any potential risks.
The remote exploitability of this vulnerability has not been proven. However, it is always advisable to keep systems up to date with the latest security patches to minimize potential risks.
For further support and assistance in addressing this vulnerability, please contact info@devnack.com.
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