# phy: rockchip-samsung-dcphy: fix out-of-range max_register

CVE record · `CVE-2026-89721`

- **Identifiers:** `CVE-2026-89721`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:46 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: `b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b to before 14afe18655c0951f4f85898f761bf92264e65ccd` (git)
  - affected: `b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b to before c1a62f9dcf531d56c56da2e4435386b6d264c69f` (git)
  - affected: `b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b to before 4486e75ba647bd8b98fc1f053101b40caceeed4b` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.15`
  - unaffected: `before 6.15` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 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:** 0.0021, the 10th 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 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89721](https://www.cve.org/CVERecord?id=CVE-2026-89721)
- [NVD: CVE-2026-89721](https://nvd.nist.gov/vuln/detail/CVE-2026-89721)

### References from the CNA

- <https://git.kernel.org/stable/c/14afe18655c0951f4f85898f761bf92264e65ccd>
- <https://git.kernel.org/stable/c/c1a62f9dcf531d56c56da2e4435386b6d264c69f>
- <https://git.kernel.org/stable/c/4486e75ba647bd8b98fc1f053101b40caceeed4b>

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-2026-89721>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89721/>. Everything for agents: <https://agentprime.io/llms.txt>.