Memory Leak Vulnerability in phy: mdio Package
Summary
GSD-2021-1001506: phy: mdio: fix memory leak. Affects Kernel versions >= 46abc02175b3c246dd5141d878f565a8725060c9, < 2250392d930bd0d989f24d355d6355b0150256e7. No fix is published. How to fix ↓
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Background
The phy: mdio package is a component of the Linux Kernel, which is responsible for managing the Media Independent Interface (MII) bus for Ethernet PHY devices. It provides the necessary functions for communication between the Ethernet controller and the PHY devices. The vulnerability in this package relates to a memory leak issue.
Vulnerability Detail
The memory leak vulnerability in phy: mdio can be exploited by an attacker to exhaust system memory resources. When certain conditions are met, the package fails to release allocated memory, leading to a gradual depletion of available memory. This can result in system instability, performance degradation, or even a denial-of-service (DoS) condition. The vulnerability was introduced in version v2.6.28 of the Linux Kernel and has been fixed in version v4.9.287.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. Updating the Linux Kernel to the fixed version is the recommended solution.
Conclusion
The memory leak vulnerability in the phy: mdio package of the Linux Kernel can result in system instability, performance degradation, or a denial-of-service (DoS) condition. It is recommended to update the Linux Kernel to version v4.9.287 or later to fix this vulnerability. If you need additional support, please reach out to DevNack.com.
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FAQ
The memory leak vulnerability in phy: mdio can lead to system instability, performance degradation, or a denial-of-service (DoS) condition.
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 it will provide real-time alerts for open-source vulnerabilities.
No, this vulnerability requires local access to the system in order to exploit it.
There are no known instances of this vulnerability being exploited in the wild.
For further support on vulnerability remediation, you can contact info@devnack.com.
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