Memory Leak in con_insert_unipair in Linux Kernel
Summary
CVE-2019-12379: An issue was discovered in con_insert_unipair in drivers/tty/vt/consolemap.c in the Linux kernel through 5.1.5. Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux kernel is an open-source monolithic Unix-like computer operating system kernel. It provides the essential services for the operating system and allows multiple processes to run concurrently. The con_insert_unipair function in the drivers/tty/vt/consolemap.c file is responsible for inserting a Unicode character pair into the console translation table. This vulnerability affects the Linux kernel versions up to 5.1.5.
Vulnerability Detail
The vulnerability, identified as CVE-2019-12379, is a memory leak issue in the con_insert_unipair function. Specifically, when the kmalloc function encounters an ENOMEM outcome, a memory leak occurs in a certain case. This vulnerability has a CVSSv3 score of 5.5, indicating a moderate severity level. If exploited, an attacker could potentially exhaust system memory resources, leading to a denial of service (DoS) condition.
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
In conclusion, the memory leak vulnerability in the con_insert_unipair function of the Linux kernel up to version 5.1.5 could potentially lead to a denial of service (DoS) condition. It is crucial for users to update their Linux kernel to version 5.1.6 or later to mitigate the risk associated with this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
If exploited, this vulnerability could lead to a denial of service (DoS) condition by exhausting system memory resources.
The vulnerability affects Linux kernel versions up to 5.1.5.
There is no known exploit available for this vulnerability at the moment.
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 monitoring and alerts for open-source vulnerabilities.
You can find more information about this vulnerability in the CVE-2019-12379 JSON report available at https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12379.json.
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