Vulnerability in drm/tegra: Fix reference leak in tegra_dsi_ganged_probe
Summary
GSD-2022-1002500: drm/tegra: Fix reference leak in tegra_dsi_ganged_probe. Affects Kernel versions >= e94236cde4d519cdecd45e2435defba33abdc99f, < 0e2f4e434e71dffd1085c3dccd676514bd71d316. No fix is published. How to fix ↓
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Background
The drm/tegra package is a component of the Linux Kernel that provides support for NVIDIA Tegra display controllers. It enables the management and rendering of graphics on Tegra-based devices. One of the functionalities of this package is the tegra_dsi_ganged_probe function, which is responsible for initializing and configuring the Tegra Display Serial Interface (DSI) controller in a ganged configuration. This configuration allows multiple DSI controllers to be used together to drive a single display. However, a reference leak vulnerability has been identified in the tegra_dsi_ganged_probe function.
Vulnerability Detail
The reference leak vulnerability in the tegra_dsi_ganged_probe function can lead to resource exhaustion and potential denial-of-service attacks. When the function is called, it fails to properly release a reference to a resource, causing a memory leak. An attacker could exploit this vulnerability by repeatedly triggering the tegra_dsi_ganged_probe function, leading to the exhaustion of system resources and potentially crashing the system. This vulnerability was introduced in version v3.19 of the Linux Kernel and has been fixed in version v4.9.311.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround available for this vulnerability. It is advised to update the Linux Kernel to the fixed version as mentioned in the 'how_to_fix' section.
Conclusion
In conclusion, the drm/tegra package in the Linux Kernel is vulnerable to a reference leak issue in the tegra_dsi_ganged_probe function. This vulnerability can lead to resource exhaustion and potential denial-of-service attacks. To mitigate this vulnerability, it is advised to update the Linux Kernel to version v4.9.311 or later. No specific workaround is available. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to resource exhaustion and potential denial-of-service attacks. It may cause system instability and crashes.
You can use Vulert Playground (https://vulert.com/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 public exploits for this vulnerability. However, it is still recommended to apply the fix to prevent any potential attacks.
Yes, this vulnerability can be exploited remotely if the affected system is accessible over the network.
The recommended solution is to update the Linux Kernel to the fixed version. There are no known alternative solutions at this time.
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