Potential resource leak in icom_probe in Kernel
Summary
GSD-2022-1003942: tty: Fix a possible resource leak in icom_probe. Affects Kernel versions < d703d912a985c1c5b50dd38c3181fc3540fa77cb. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that manages communication between hardware and software. It provides essential functions and services for the system's operation. The icom_probe function is responsible for handling input/output control operations for ICOM devices. These devices are typically used for serial communication. However, a potential resource leak has been identified in the icom_probe function, which could lead to various security issues.
Vulnerability Detail
The vulnerability in icom_probe arises from a possible resource leak. If not properly handled, this can result in resource exhaustion, leading to system instability or denial of service. An attacker could potentially exploit this vulnerability to exhaust system resources, causing a system crash or allowing for further privilege escalation attacks. The vulnerability has been addressed in Linux Kernel version v4.14.283 by commit d703d912a985c1c5b50dd38c3181fc3540fa77cb.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.14.283 or later. This can be done by obtaining the latest version of the Kernel source code from the official repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiling it for the target system. Alternatively, users can wait for their Linux distribution to provide an updated package containing the fix.
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Workaround
As a workaround, users can disable the affected functionality by blacklisting the 'icom' module. This can be done by adding 'blacklist icom' to the '/etc/modprobe.d/blacklist.conf' file and rebooting the system. However, this workaround will prevent the use of ICOM devices until the vulnerability is properly fixed.
Conclusion
In conclusion, a potential resource leak has been identified in the icom_probe function of the Kernel. This vulnerability could lead to resource exhaustion and various security issues. It is crucial to update the Linux Kernel to version v4.14.283 or later to mitigate this vulnerability. Alternatively, users can apply the provided workaround by blacklisting the 'icom' module. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to resource exhaustion, potentially causing system instability or denial of service. It may also enable further privilege escalation 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 Vulert will analyze it for any known vulnerabilities.
Yes, the vulnerability has been fixed in Linux Kernel version v4.14.283 by commit d703d912a985c1c5b50dd38c3181fc3540fa77cb. It is recommended to update to this version or a later one to mitigate the vulnerability.
Yes, you can disable the affected functionality by blacklisting the 'icom' module. Add 'blacklist icom' to the '/etc/modprobe.d/blacklist.conf' file and reboot the system. However, this workaround should only be considered temporary until the vulnerability is properly fixed.
You can find more information about this vulnerability in the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and the vulnerability database maintained by the Cloud Security Alliance (https://github.com/cloudsecurityalliance/gsd-database).
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