Memory Leak in drm/imx_pd_connector_get_modes
Summary
GSD-2022-1002309: drm/imx: Fix memory leak in imx_pd_connector_get_modes. Affects Kernel versions >= 76ecd9c9fb24b014a6f33fbb1287ede3be12158b, < 41624d7c0c3df71dee170c610744aaa5909327b8. No fix is published. How to fix ↓
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Background
The drm/imx_pd_connector_get_modes function is part of the Linux Kernel package, which is responsible for managing the core functionality of the Linux operating system. This particular function is used in the i.MX platform driver to retrieve the supported display modes for a given connector. The i.MX platform is widely used in embedded systems and IoT devices. However, a memory leak vulnerability has been identified in the imx_pd_connector_get_modes function, which could lead to resource exhaustion and potential system instability.
Vulnerability Detail
The memory leak vulnerability in imx_pd_connector_get_modes arises from a failure to properly release allocated memory when retrieving display modes. This can result in a gradual accumulation of unreleased memory, leading to resource exhaustion and potential system crashes. An attacker with local access to the affected system could potentially exploit this vulnerability to cause a denial-of-service (DoS) condition. The vulnerability was introduced in Linux Kernel version v4.8 and has been fixed in version v4.19.238.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable the affected functionality by blacklisting the imx_pd_connector_get_modes function. This can be achieved by modifying the kernel configuration or using kernel module parameters. However, it is important to note that this workaround may result in limited or degraded display functionality.
Conclusion
The memory leak vulnerability in drm/imx_pd_connector_get_modes can lead to resource exhaustion and potential system crashes. It is crucial to update the Linux Kernel package to version v4.19.238 or later to mitigate this vulnerability. Alternatively, users can apply the temporary workaround of blacklisting the affected function, although this may result in limited display functionality. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to resource exhaustion and potential system crashes, potentially causing a denial-of-service (DoS) condition.
Users of Linux systems running the affected versions of the Linux Kernel package, specifically those utilizing the i.MX platform driver.
No, this vulnerability requires local access to the affected system in order to be exploited.
There are no known instances of this vulnerability being exploited in the wild at this time.
Yes, the vulnerability has been fixed in Linux Kernel version v4.19.238. Users are advised to update to this version or later.
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