Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2025-21987
CVE-2025-21987:
Linux Debian vulnerability analysis and mitigation
Overview
CVE-2025-21987 is a vulnerability discovered in the Linux kernel, specifically affecting the AMD GPU driver component. The issue was disclosed on April 2, 2025, and involves an uninitialized return value in the amdgputtmclear_buffer function of the DRM/AMDGPU module (NVD Database).
Technical details
The vulnerability occurs in the DRM/AMDGPU driver where an uninitialized value can be returned if amdgpurescleared returns true for all regions. This issue is related to the buffer clearing mechanism in the AMD GPU driver implementation (Debian Tracker).
Impact
The vulnerability could potentially lead to information disclosure or system instability due to the use of uninitialized values in the GPU driver (NVD Database).
Mitigation and workarounds
The issue has been resolved in various Linux distributions including Debian's bullseye (5.10.234-1), bookworm (6.1.133-1), and trixie (6.12.21-1) releases. The fix has been implemented through a patch that properly initializes the return value in the amdgputtmclear_buffer function (Debian Tracker).
Additional resources
Source: This report was generated using AI
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