Vulnerability in Linux Kernel: net: do not keep the dst cache when uncloning an skb dst and its metadata
Summary
GSD-2022-1000302: net: do not keep the dst cache when uncloning an skb dst and its metadata. Affects Kernel versions >= d71785ffc7e7cae3fbdc4ea8a9d05b7a1c59f7b8, < 39a269fbb80a9e905818d332aebe6651fd7a1ee9. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for various Linux distributions. It provides essential functionality for managing system resources, handling hardware devices, and facilitating communication between software components. The vulnerability in question affects the networking subsystem of the Linux Kernel, specifically the handling of the destination (dst) cache when uncloning a socket buffer (skb) dst and its metadata.
Vulnerability Detail
The vulnerability arises from a flaw in the Linux Kernel's networking subsystem. When uncloning an skb dst and its metadata, the dst cache is not properly cleared, leading to potential security risks. Although the impact and attack plausibility have not been proven, this vulnerability could potentially be exploited by malicious actors to gain unauthorized access, execute arbitrary code, or cause denial-of-service conditions. The vulnerability was introduced in version v4.6 of the Linux Kernel and has been fixed in version v4.14.267.
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
In conclusion, the Linux Kernel is affected by a vulnerability in its networking subsystem that could potentially lead to unauthorized access, code execution, or denial-of-service attacks. It is crucial to update the Linux Kernel to version v4.14.267 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven, but it could potentially allow unauthorized access, code execution, or denial-of-service attacks.
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.
No known exploit for this vulnerability has been reported at this time.
The recommended mitigation is to update the Linux Kernel to the fixed version v4.14.267 or later.
For more information about this vulnerability, you can refer to the vulnerability database entry at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000302.json
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