Kernel: Fix kernel panic on skipped partition
Summary
GSD-2022-1000472: mtd: parsers: qcom: Fix kernel panic on skipped partition. Affects Kernel versions >= 803eb124e1a64e42888542c3444bfe6dac412c7f, < eb03cb6e03ffd9173e18e5fe87e4e3ce83820453. 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 the system's resources and facilitates communication between hardware and software. It provides essential functions and services to enable the proper functioning of the system. The vulnerability in question affects the Kernel's mtd parsers for Qualcomm devices. These parsers are responsible for handling memory technology devices (MTD) and parsing partition tables. The vulnerability can lead to a kernel panic when a partition is skipped, potentially causing system instability or crashes.
Vulnerability Detail
The vulnerability arises from a flaw in the mtd parsers for Qualcomm devices in the Kernel. When a partition is skipped, it triggers a kernel panic, leading to system instability or crashes. An attacker could potentially exploit this vulnerability to cause a denial-of-service (DoS) attack by deliberately skipping partitions. The vulnerability was introduced in Linux Kernel version v5.12 and has been fixed in version v5.15.25 by commit eb03cb6e03ffd9173e18e5fe87e4e3ce83820453.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.15.25 or later. This can be done by obtaining the updated Kernel source code from the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiling it according to the provided instructions. Alternatively, users can wait for their Linux distribution to release an updated package containing the fixed Kernel version.
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Workaround
There is no specific workaround available for this vulnerability. The recommended solution is to update the Kernel to the fixed version.
Conclusion
The vulnerability in the Kernel's mtd parsers for Qualcomm devices can lead to kernel panics and system instability when a partition is skipped. It is crucial to update the Kernel to version v5.15.25 or later to mitigate this vulnerability. Users can also utilize the Vulert Playground to check if their system is affected. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to kernel panics, causing system instability or crashes. It could potentially be exploited by an attacker to launch a denial-of-service (DoS) attack.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) to the playground, and it will alert you if your system is vulnerable.
There are no known exploits for this vulnerability at the time of this report. However, it is always recommended to apply security patches promptly to mitigate potential risks.
The recommended solution is to update the Kernel to the fixed version. However, if updating is not immediately feasible, it is essential to ensure other security measures are in place, such as network segmentation, access controls, and monitoring for suspicious activity.
For more information about this vulnerability, you can refer to the vulnerability details in the GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000472.json).
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