# drm/amdgpu: Reject UVD message with invalid number of h265 refs

CVE record · `CVE-2026-80909`

- **Identifiers:** `CVE-2026-80909`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 4 Sept 2026
- **Updated:** 7 Sept 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 4 Sept 2026, 17:19 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `86fa0bdc6fd7b2debc07ce86f1bcd5fb254822e3 to before 1facad2a78c1a8aeecc36eb4d560c7f1e10ce198` (git)
  - affected: `86fa0bdc6fd7b2debc07ce86f1bcd5fb254822e3 to before 499907e5d46e575e96967c0230a0a6af980a17ab` (git)
  - affected: `86fa0bdc6fd7b2debc07ce86f1bcd5fb254822e3 to before cbf1c84bf5cac2b3742ea3d2085fa713424465cc` (git)
  - affected: `86fa0bdc6fd7b2debc07ce86f1bcd5fb254822e3 to before a930c54cb67200de8bc0de87480d09ece7dcd85d` (git)
  - affected: `86fa0bdc6fd7b2debc07ce86f1bcd5fb254822e3 to before 2abcdc5f738574e7fcdd9417575dffb877fdc26f` (git)
  - affected: `86fa0bdc6fd7b2debc07ce86f1bcd5fb254822e3 to before e304c3e0d9ce251887be1f274aa0ed52219d5fd7` (git)
  - affected: `86fa0bdc6fd7b2debc07ce86f1bcd5fb254822e3 to before 0acdf1a575f59bd46717d5c487d84575af5bee8f` (git)
  - affected: `86fa0bdc6fd7b2debc07ce86f1bcd5fb254822e3 to before 9fca434208f1f9ab977feac62df8ebb1cc7ce893` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.2`
  - unaffected: `before 4.2` (semver)
  - unaffected: `5.10.266 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.217 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.184 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.153 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.105 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.46 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.10 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0016, the 5th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 4 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80909](https://www.cve.org/CVERecord?id=CVE-2026-80909)
- [NVD: CVE-2026-80909](https://nvd.nist.gov/vuln/detail/CVE-2026-80909)

### References from the CNA

- <https://git.kernel.org/stable/c/1facad2a78c1a8aeecc36eb4d560c7f1e10ce198>
- <https://git.kernel.org/stable/c/499907e5d46e575e96967c0230a0a6af980a17ab>
- <https://git.kernel.org/stable/c/cbf1c84bf5cac2b3742ea3d2085fa713424465cc>
- <https://git.kernel.org/stable/c/a930c54cb67200de8bc0de87480d09ece7dcd85d>
- <https://git.kernel.org/stable/c/2abcdc5f738574e7fcdd9417575dffb877fdc26f>
- <https://git.kernel.org/stable/c/e304c3e0d9ce251887be1f274aa0ed52219d5fd7>
- <https://git.kernel.org/stable/c/0acdf1a575f59bd46717d5c487d84575af5bee8f>
- <https://git.kernel.org/stable/c/9fca434208f1f9ab977feac62df8ebb1cc7ce893>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-80909>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80909/>. Everything for agents: <https://agentprime.io/llms.txt>.