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Vulnerability DatabaseCVE-2022-49966

CVE-2022-49966: 
Linux Kernel vulnerability analysis and mitigation

Overview

CVE-2022-49966 is a vulnerability discovered in the Linux kernel, specifically affecting the AMD graphics driver component. The vulnerability was published on June 18, 2025, and involves a missing ->fini_microcode interface for Sienna Cichlid graphics hardware (NVD, Wiz).

Technical details

The vulnerability exists in the DRM (Direct Rendering Manager) AMD power management subsystem, specifically related to the missing ->fini_microcode interface implementation for Sienna Cichlid graphics hardware. According to the CVSS scoring, Debian has assigned it a severity rating of 5 with the vector (AV:L/AC:L/Au:S/C:N/I:N/A:C) (Rapid7).

Impact

The primary impact of this vulnerability is the potential for memory leaks in systems using AMD Sienna Cichlid graphics hardware with the affected Linux kernel versions (Wiz).

Mitigation and workarounds

The vulnerability has been patched in various Linux distributions. Debian has released fixes in multiple versions: bullseye (5.10.237-1), bookworm (6.1.140-1), and trixie (6.12.31-1). The fix implements the missing ->fini_microcode interface for Sienna Cichlid to prevent potential memory leaks (Debian).

Additional resources

Source: This report was generated using AI

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