CVE-2026-43302
Description
A flaw was found in the Linux kernel's V3D graphics driver. When the Direct Memory Access (DMA) Application Programming Interface (API) debug option is enabled, the kernel may report a segment size mismatch. This occurs because the 'max_seg_size' parameter is not correctly configured, leading to warnings about mapping scatter-gather (SG) segments longer than the device claims to support. While primarily a debug warning, this condition could indicate underlying memory management issues.
Understanding the Weakness (CWE)
Integrity,Availability,Confidentiality
Technical Impact: DoS: Crash, Exit, or Restart; Execute Unauthorized Code or Commands; Read Memory; Modify Memory
If the incorrect calculation is used in the context of memory allocation, then the software may create a buffer that is smaller or larger than expected. If the allocated buffer is smaller than expected, this could lead to an out-of-bounds read or write (CWE-119), possibly causing a crash, allowing arbitrary code execution, or exposing sensitive data.
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