ARM: cns3xxx: Fix refcount leak in cns3xxx_init
Summary
GSD-2022-1004734: ARM: cns3xxx: Fix refcount leak in cns3xxx_init. Affects Kernel versions >= 415f59142d9d9dd023deaeb3b4dfc1aecdd3983c, < d1359e4129ad43e43972a28838b87291c51de23d. No fix is published. How to fix ↓
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Background
The ARM cns3xxx package is a component of the Linux Kernel. It provides support for the ARM Cortex-A9-based cns3xxx SoCs. These SoCs are commonly used in networking and storage devices. The cns3xxx_init function is responsible for initializing the cns3xxx hardware. However, a refcount leak vulnerability has been discovered in this function.
Vulnerability Detail
The refcount leak vulnerability in cns3xxx_init allows an attacker to cause a refcount leak, leading to a resource exhaustion condition. By repeatedly triggering the vulnerable code path, an attacker can exhaust system resources, potentially resulting in a denial-of-service (DoS) condition. The vulnerability was introduced in version v3.10 of the Linux Kernel and is fixed in version v5.4.202.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No workaround has been provided for this vulnerability.
Conclusion
The refcount leak vulnerability in the ARM cns3xxx package can lead to a denial-of-service (DoS) condition by exhausting system resources. To mitigate this vulnerability, it is recommended to update the Linux Kernel to version v5.4.202 or later. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a denial-of-service (DoS) condition by exhausting system resources.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will analyze it for any open-source vulnerabilities, including this one.
At the time of this report, no known exploits for this vulnerability have been reported.
The only known mitigation is to update the Linux Kernel to version v5.4.202 or later.
You can find more information about this vulnerability in the official Linux Kernel repository: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
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