Use-after-free vulnerability in net: ethernet package
Summary
GSD-2021-1000926: net: ethernet: fix potential use-after-free in ec_bhf_remove. Affects Kernel versions >= 6af55ff52b02d492d45db88df3e461fa51a6f753, < 19f88ca68ccf8771276a606765239b167654f84a. No fix is published. How to fix ↓
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Background
The net: ethernet package is a component of the Linux Kernel, which is responsible for handling Ethernet network interfaces. It provides the necessary functionality for transmitting and receiving Ethernet frames. The package is widely used in Linux-based systems and is critical for network communication.
Vulnerability Detail
The identified vulnerability in the net: ethernet package is a potential use-after-free issue in the ec_bhf_remove function. This vulnerability can be exploited by an attacker to manipulate memory after it has been freed, leading to unpredictable behavior and potential security breaches. The vulnerability was introduced in version v3.15 of the Linux Kernel and has been fixed in version v5.4.128.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround available for this vulnerability. Updating the Linux Kernel to the fixed version is the recommended solution.
Conclusion
The use-after-free vulnerability in the net: ethernet package of the Linux Kernel can pose a significant risk to the security and stability of affected systems. It is crucial to update the Linux Kernel to version v5.4.128 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can potentially be exploited by attackers to execute arbitrary code or cause a denial-of-service (DoS) condition on affected systems.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will provide real-time alerts for open-source vulnerabilities, including this one.
There are no known instances of this vulnerability being exploited in the wild. However, it is crucial to apply the recommended fix to ensure the security of your system.
It is not recommended to manually patch the vulnerability without updating the entire Linux Kernel. The fix is integrated into the updated kernel version, ensuring comprehensive resolution of the issue.
You can find more information about this vulnerability, including the specific commits that introduced and fixed it, in the vulnerability database entry at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1000xxx/GSD-2021-1000926.json.
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