Vulnerability in Kernel: tomoyo_domain_quota_is_ok() Exceeds Quota Check
Summary
GSD-2022-1000036: tomoyo: Check exceeded quota early in tomoyo_domain_quota_is_ok(). Affects Kernel versions < 930d4986a432e89447ebf38be5244732c58ec9a3. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functionalities such as process management, memory management, and device drivers. The tomoyo_domain_quota_is_ok() function is part of the Tomoyo Linux Security Module (LSM) in the Kernel, which implements mandatory access control policies. This vulnerability affects the Kernel's implementation of tomoyo_domain_quota_is_ok().
Vulnerability Detail
The tomoyo_domain_quota_is_ok() function in the Kernel's Tomoyo LSM does not correctly check for exceeded quotas. This flaw could potentially allow a malicious actor to bypass quota restrictions and gain unauthorized access to resources. The vulnerability was discovered in the Linux Kernel and has not yet been proven to have a specific impact or attack vector. However, it is considered a security vulnerability that requires attention and remediation.
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 v5.4.170 or later. The fix for this issue was implemented in commit 930d4986a432e89447ebf38be5244732c58ec9a3. Updating to the latest stable version of the Kernel will ensure that the vulnerability is patched.
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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 of exploitation.
Conclusion
The vulnerability in the Kernel's tomoyo_domain_quota_is_ok() function poses a potential risk of unauthorized resource access. To mitigate this risk, it is crucial to update the Linux Kernel to version v5.4.170 or later. This update includes the necessary fix for the vulnerability. If you need further assistance or information on vulnerability remediation, please reach out to DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, it has the potential to allow unauthorized access to resources by bypassing quota restrictions.
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.
There is no known exploit for this vulnerability at this time. However, it is crucial to update the Kernel to the fixed version to prevent potential exploitation.
The vulnerability is present in versions of the Linux Kernel prior to v5.4.170. Updating to this version or later will address the issue.
For further support on vulnerability remediation, you can contact info@devnack.com. They can provide guidance and assistance in addressing this vulnerability.
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