Refcount Leak Bug in time.c in Linux Kernel
Summary
GSD-2022-1004739: xtensa: Fix refcount leak bug in time.c. Affects Kernel versions < e5234a9d64a976abd134a14710dcd5188158a7c5. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for various Linux distributions. It provides essential functionality for managing system resources, including memory, processes, and device drivers. The time.c file in the kernel is responsible for handling time-related operations and maintaining accurate system time. However, a vulnerability has been discovered in the time.c file that leads to a refcount leak.
Vulnerability Detail
The refcount leak bug in time.c allows for the improper handling of reference counts, leading to a resource leak. Attackers may exploit this vulnerability to exhaust system resources, resulting in denial of service conditions or potential privilege escalation. The bug has been fixed in the Linux Kernel version v5.4.202 by commit e5234a9d64a976abd134a14710dcd5188158a7c5.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround available for this vulnerability. It is crucial to apply the fix by updating the Linux Kernel to the patched version.
Conclusion
The refcount leak bug in time.c of the Linux Kernel can lead to resource leaks and potential security risks. It is crucial to update the kernel to the fixed version v5.4.202 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can be exploited to exhaust system resources, leading to denial of service conditions or potential privilege escalation.
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 provide real-time alerts for open-source vulnerabilities.
At the time of this report, no known exploits for this vulnerability have been disclosed. However, it is crucial to apply the fix to prevent potential exploitation.
No, the recommended approach is to update the Linux Kernel to the patched version. Applying the fix ensures that the vulnerability is properly addressed.
More details about the fix can be found in the commit e5234a9d64a976abd134a14710dcd5188158a7c5 in the Linux Kernel Git repository.
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