Use After Free Vulnerability in ethernet:enic Package
Summary
GSD-2021-1000213: ethernet:enic: Fix a use after free bug in enic_hard_start_xmit. Affects Kernel versions >= fb7516d42478ebc8e2f00efb76ef96f7b68fd8d3, < d90529392aaf498dafa95d212295d64b2cea4e24. No fix is published. How to fix ↓
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Background
The ethernet:enic package is a component of the Linux Kernel, which is responsible for managing Ethernet network interfaces. It provides the necessary functionality for transmitting and receiving network packets. The enic_hard_start_xmit function within this package is used to initiate the transmission of Ethernet frames. However, a use after free vulnerability has been discovered in this function, which can lead to potential security risks.
Vulnerability Detail
The use after free vulnerability in enic_hard_start_xmit arises when the function attempts to access memory that has already been freed. This can occur due to improper handling of resources during the transmission process. An attacker could potentially exploit this vulnerability to execute arbitrary code or cause a denial of service. The vulnerability was introduced in version v4.16 of the Linux Kernel and has been fixed in version v5.12.5.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability.
Conclusion
The use after free vulnerability in ethernet:enic can pose significant security risks, allowing attackers to execute arbitrary code or cause a denial of service. It is crucial to update the Linux Kernel to version v5.12.5 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The use after free vulnerability in ethernet:enic can potentially allow an attacker to execute arbitrary code or cause a denial of service.
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 and the playground will provide real-time alerts for open-source vulnerabilities.
Yes, a patch has been released in version v5.12.5 of the Linux Kernel. It is recommended to update to this version or later to fix the vulnerability.
Yes, this vulnerability can be exploited remotely if an attacker is able to send specially crafted network packets to the affected system.
There are no known instances of this vulnerability being exploited in the wild at this time.
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