Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2024-42227
CVE-2024-42227:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2024-42227 affects the Linux kernel's AMD display driver, specifically in the drm/amd/display component. The vulnerability was discovered and disclosed on July 30, 2024, affecting Linux kernel versions up to (excluding) 6.9.9. The issue involves an overlapping memory copy operation within the dmlcoremode_programming function that could lead to unexpected behavior (NVD, Debian).
Technical details
The vulnerability exists in the dmlcoremodeprogramming function where &modelib->mp.Watermark and &locals->Watermark share the same memory address. The original code used memcpy() for copying data between these overlapping memory regions, which could lead to undefined behavior. The CVSS v3.1 base score is 4.7 (Medium) with the vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H (NVD).
Impact
The vulnerability could result in unexpected behavior in the AMD display driver when copying watermark data, potentially leading to system instability or denial of service in the affected component. The impact is limited to systems using AMD graphics hardware with the affected driver code (Kernel Patch).
Mitigation and workarounds
The vulnerability has been fixed by replacing memcpy() with memmove() in the affected code. The fix is included in Linux kernel version 6.9.9 and has been backported to various stable kernel versions. Users should update their systems to the patched versions available through their distribution's package management system (Kernel Patch).
Additional resources
Source: This report was generated using AI
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