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Vulnerability DatabaseCVE-2025-21985
CVE-2025-21985:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2025-21985 is a vulnerability discovered in the Linux kernel, specifically affecting the AMD display driver (drm/amd/display). The vulnerability was disclosed on April 1, 2025, and involves out-of-bound accesses in the display driver component (NVD).
Technical details
The vulnerability stems from a buffer overflow condition where hpo_stream_to_link_encoder_mapping has a size of MAX_HPO_DP2_ENCODERS(=4), but the location parameter can have a size up to 6. Additionally, disp_cfg_stream_location can be used as an array index which should be 0..5, requiring modification to the ASSERT conditions (NVD).
Impact
The vulnerability could potentially lead to out-of-bounds memory access in the AMD display driver component of the Linux kernel, which may affect system stability and security (NVD).
Mitigation and workarounds
The vulnerability has been resolved in the Linux kernel through patches that implement proper boundary checks for the affected components. The fix includes adding validation for the location parameter against MAX_HPO_DP2_ENCODERS and correcting the ASSERT conditions for array index validation (NVD).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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