Array Index Out of Bound Vulnerability in Linux Kernel - CVE-2022-48979
Summary
CVE-2022-48979: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix array index out of bound error in DCN32 DML [Why&How] LinkCapacitySupport array is indexed with the number of voltage states and no... 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 the core component of many operating systems, providing essential services for hardware and software interaction. It is known for its stability, performance, and security features. However, vulnerabilities can arise, such as CVE-2022-48979, which affects the AMD display driver within the kernel, potentially compromising system integrity.
Vulnerability Detail
CVE-2022-48979 is an array index out of bound error in the AMD display driver (DCN32 DML) of the Linux kernel. This vulnerability occurs because the LinkCapacitySupport array is incorrectly indexed with the number of voltage states instead of the number of maximum Display Pipe Processors (DPPs). This flaw could lead to unexpected behavior, including system crashes or data corruption, as the kernel may attempt to access memory outside the allocated bounds.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. The best course of action is to apply the patch as soon as it is available.
Conclusion
CVE-2022-48979 represents a significant vulnerability in the Linux kernel that could lead to serious system issues. It is essential to stay informed about such vulnerabilities and apply patches promptly to maintain system security and integrity.
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FAQ
CVE-2022-48979 is a vulnerability in the Linux kernel related to an array index out of bound error in the AMD display driver.
This vulnerability could lead to system crashes or data corruption due to improper memory access.
Yes, the patched version for Debian 12 and 13 is 6.1.4-1. It is recommended to update your Linux package to this version.
Yes, you can use Vulert's playground at Vulert Scanner to check if your application is affected without any signup.
While there are no specific workarounds, it is crucial to monitor for updates and apply them as soon as possible to mitigate risks.
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