Overflow Vulnerability in seq_buf_putmem_hex() in Kernel
Summary
GSD-2021-1001292: seq_buf: Fix overflow in seq_buf_putmem_hex(). Affects Kernel versions >= 5e3ca0ec76fce92daa4eed0d02de9c79b1fe3920, < f9fb4986f4d81182f938d16beb4f983fe71212aa. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential functionalities such as process management, memory management, and device drivers. The seq_buf_putmem_hex() function is a part of the seq_buf API in the Kernel, which is used for sequential output buffering. This vulnerability specifically affects the seq_buf_putmem_hex() function, leading to a potential overflow.
Vulnerability Detail
The seq_buf_putmem_hex() function in the Kernel is vulnerable to an overflow issue. This vulnerability was introduced in version v2.6.27 of the Kernel and was fixed in version v5.10.51. An attacker could exploit this vulnerability by providing malicious input to the function, causing a buffer overflow. This could potentially lead to arbitrary code execution, denial of service, or information disclosure. The vulnerability was discovered and reported by an automated security analysis tool, and its impact and attack plausibility have not been proven.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to update the Kernel to the fixed version to mitigate the risk.
Conclusion
In conclusion, the seq_buf_putmem_hex() function in the Kernel is vulnerable to an overflow issue. It is crucial to update the Kernel to version v5.10.51 or later to mitigate the risk of potential arbitrary code execution, denial of service, or information disclosure. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability could potentially allow an attacker to execute arbitrary code, cause a denial of service, or disclose sensitive information.
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.
At the time of this report, there are no known exploits for this vulnerability. However, it is crucial to update the Kernel to the fixed version to prevent any potential exploitation.
Yes, a patch for this vulnerability is available in version v5.10.51 of the Kernel. It is recommended to update to this version or a later version to fix the vulnerability.
This vulnerability was discovered and reported by an automated security analysis tool. The actual impact and attack plausibility have not been proven.
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