Vulnerability in ftrace: Blindly Reading IP Address
Summary
GSD-2021-1000895: ftrace: Do not blindly read the ip address in ftrace_bug(). Affects Kernel versions >= 05736a427f7e16be948ccbf39782bd3a6ae16b14, < 7e4e824b109f1d41ccf223fbb0565d877d6223a2. No fix is published. How to fix ↓
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Background
The ftrace package is a component of the Linux Kernel, which is responsible for tracing and debugging kernel code. It provides a framework for instrumenting and monitoring various kernel functions. The ftrace_bug() function within the package is used to report errors and bugs in the ftrace infrastructure. However, a vulnerability exists in this function that allows for blind reading of the IP address. This vulnerability was introduced in version v2.6.28 of the Linux Kernel and has been fixed in version v5.4.126.
Vulnerability Detail
The vulnerability in ftrace_bug() arises from blindly reading the IP address. This can potentially lead to information disclosure or other security issues. An attacker may exploit this vulnerability to obtain sensitive information or launch further attacks. The vulnerability was discovered and reported by an automated security tool, and its impact and attack plausibility have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The vulnerability in ftrace that blindly reads the IP address can potentially lead to information disclosure or other security issues. It is crucial to update the Linux Kernel to version v5.4.126 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
ftrace is a component of the Linux Kernel that provides tracing and debugging capabilities for kernel code.
The impact of this vulnerability could potentially lead to information disclosure or other security issues.
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 alert you in real-time if the vulnerability is present.
Yes, the vulnerability has been fixed in Linux Kernel version v5.4.126. It is recommended to update to this version or later to ensure the vulnerability is mitigated.
This vulnerability was discovered and reported by an automated security tool. Its impact and attack plausibility have not been proven yet.
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