Memory Leak Vulnerability in Kernel: media: atomisp
Summary
GSD-2021-1000372: media: [next] staging: media: atomisp: fix memory leak of object flash. Affects Kernel versions >= 9289cdf399922a1bd801a8cd946a79581c00a380, < cc4cc2fb5aaf9adb83c02211eb13b16cfcb7ba64. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages system resources and facilitates communication between hardware and software. The media subsystem within the Kernel handles various media-related functionalities, including image and video processing. The atomisp driver, part of the staging directory in the media subsystem, is responsible for supporting Intel Atom Image Signal Processor (ISP) devices. These devices are commonly found in mobile and embedded systems, providing image and video capture capabilities. However, a memory leak vulnerability has been identified in the atomisp driver, which could lead to resource exhaustion and system instability.
Vulnerability Detail
The memory leak vulnerability in the atomisp driver occurs when handling object flash operations. Object flash is a feature that allows the driver to control the flash settings for capturing images or videos. Due to improper memory management, resources allocated during object flash operations are not properly released, resulting in a continuous accumulation of memory. This can lead to a gradual depletion of available system memory, potentially causing system slowdowns, crashes, or even denial-of-service conditions. Attackers may be able to exploit this vulnerability to exhaust system resources and disrupt normal system operation.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can unload the atomisp driver module to prevent the memory leak issue. This can be achieved by executing the following command as root:
rmmod atomisp
Conclusion
In conclusion, a memory leak vulnerability has been discovered in the atomisp driver within the Linux Kernel's media subsystem. This vulnerability can lead to resource exhaustion and system instability, potentially causing system slowdowns, crashes, or denial-of-service conditions. To mitigate this risk, it is crucial to update the Linux Kernel to version v5.10.37 or later, which includes a patch for the memory leak issue. Users can also utilize the Vulert Playground at https://vulert.com/scanner to check if their system is affected by this vulnerability. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
The memory leak vulnerability in the atomisp driver can lead to resource exhaustion and system instability. It may cause system slowdowns, crashes, or denial-of-service conditions, potentially disrupting normal system operation.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your manifest file, such as package-lock.json, and Vulert will analyze it in real-time to identify any open-source vulnerabilities, including this memory leak issue in the atomisp driver.
At the time of this report, no known exploits for this vulnerability have been disclosed. However, it is important to apply the recommended fix as soon as possible to mitigate the risk of potential exploitation.
While it is technically possible to manually patch the atomisp driver, it is strongly recommended to update the entire Kernel to the latest version. Updating the Kernel ensures that all relevant security patches and improvements are applied, providing a more comprehensive solution.
No alternative drivers or workarounds specific to the atomisp driver have been identified. The recommended approach is to update the Linux Kernel to the latest version, which includes the necessary fix for the memory leak vulnerability.
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