Buffer Overrun Vulnerability in wlcore Package
Summary
GSD-2021-1000344: wlcore: Fix buffer overrun by snprintf due to incorrect buffer size. Affects Kernel versions >= d204db4fe6acfea7b62fa397c587281399fbd8af, < b6b894e7a27e52a9032a7eaace538538830d4b9e. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
Background
The wlcore package is a component of the Linux Kernel ecosystem. It provides wireless connectivity support for various devices. The package includes drivers and firmware for wireless chips, enabling communication over Wi-Fi. The vulnerability in question arises from an incorrect buffer size used in the snprintf function within the wlcore package.
Vulnerability Detail
The vulnerability in the wlcore package is caused by a buffer overrun due to an incorrect buffer size used in the snprintf function. This can potentially lead to a variety of security issues, including remote code execution, denial of service, or information disclosure. An attacker could exploit this vulnerability by crafting a malicious input that exceeds the buffer size, causing the snprintf function to overwrite adjacent memory. This could result in the execution of arbitrary code or the disclosure of sensitive information.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a workaround, users can apply patches or backports provided by the Linux Kernel community to address the vulnerability. Alternatively, users can disable the affected functionality or restrict access to the vulnerable component if feasible. However, it is strongly advised to update to the fixed version of the Kernel as soon as possible.
Conclusion
In conclusion, the wlcore package in the Linux Kernel is vulnerable to a buffer overrun due to an incorrect buffer size used in the snprintf function. This vulnerability can have severe security implications, including remote code execution and information disclosure. It is crucial to update the Kernel to version v5.10.37 or later to mitigate this issue. For further assistance and support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The vulnerability can potentially allow an attacker to execute arbitrary code, cause 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, including this one.
At the time of this report, there is no known public exploit for this vulnerability. However, it is crucial to apply the fix promptly to mitigate any potential risks.
Yes, this vulnerability can be exploited remotely. An attacker can craft malicious inputs to trigger the buffer overrun, potentially leading to remote code execution or other security issues.
If updating the Kernel is not immediately feasible, you can apply patches or backports provided by the Linux Kernel community. Additionally, you can consider disabling the affected functionality or restricting access to the vulnerable component as temporary mitigations.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
