Subtraction Overflow Bug in drm/i915/selftests
Summary
GSD-2022-1004182: drm/i915/selftests: fix subtraction overflow bug. Affects Kernel versions >= e1c5f754067b594de58d387aa5873dec83b6c9fd, < e8997d2d6b8d764e12489f1af2a1ce1d7384ca2a. No fix is published. How to fix ↓
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Background
The drm/i915/selftests package is a part of the Linux Kernel ecosystem. It provides self-tests for the Intel i915 graphics driver, which is responsible for managing graphics hardware on Intel processors. The self-tests are used to verify the correctness and stability of the driver. However, a vulnerability has been discovered in the package that can lead to a subtraction overflow bug.
Vulnerability Detail
The subtraction overflow bug in drm/i915/selftests is a security vulnerability that can be exploited by an attacker to cause a denial-of-service (DoS) condition or potentially execute arbitrary code with kernel privileges. The bug occurs when performing a subtraction operation, and if the result is larger than the maximum value that can be represented, it wraps around and produces an incorrect result. This can lead to various issues, including crashes, data corruption, and privilege escalation.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The subtraction overflow bug in drm/i915/selftests is a critical vulnerability that can lead to a denial-of-service condition or potential privilege escalation. It is crucial for users to update to the latest version of the Linux Kernel to mitigate the risks associated with this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a denial-of-service (DoS) condition or potential privilege escalation, allowing an attacker to crash the system or execute arbitrary code with kernel privileges.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. It analyzes the package-lock.json file and provides real-time alerts for open-source vulnerabilities.
At the time of this report, there are no known exploits for this vulnerability. However, it is important to apply the recommended fix to mitigate any potential risks.
No, this vulnerability requires local access to the system in order to exploit it.
No, there is no known workaround for this vulnerability. It is recommended to update to the latest version of the Linux Kernel to address the issue.
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