# fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write

CVE record · `CVE-2026-89730`

- **Identifiers:** `CVE-2026-89730`
- **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: `34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 447b3c893987a0106a65f04b62ec3271892e9d98` (git)
  - affected: `34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 3b8938f5fbcf4a918785f9cb4b108782eb4ea717` (git)
  - affected: `34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 2564ac3d3b8b47cd9692a5bf42d668ed7218b54e` (git)
  - affected: `34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 8f3365ed2a5db2ac95ab70a6c47561db39d24537` (git)
  - affected: `34d1dc17ce978ae76e676d401b48fe9d004aa948 to before b138bc665e21d4422382ab43aebdf0a2b7bb9cb3` (git)
  - affected: `34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 827ec385458adeeda651de2b6f3537e386b1a8d9` (git)
  - affected: `34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 4dc1051939e499c838229af035464a5fc7671198` (git)
  - affected: `34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 9da70a43b5fea60d758137f7f0ccfe19356cb5bb` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.14`
  - unaffected: `before 4.14` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (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:** 0.0022, the 12th 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-2026-89730](https://www.cve.org/CVERecord?id=CVE-2026-89730)
- [NVD: CVE-2026-89730](https://nvd.nist.gov/vuln/detail/CVE-2026-89730)

### References from the CNA

- <https://git.kernel.org/stable/c/447b3c893987a0106a65f04b62ec3271892e9d98>
- <https://git.kernel.org/stable/c/3b8938f5fbcf4a918785f9cb4b108782eb4ea717>
- <https://git.kernel.org/stable/c/2564ac3d3b8b47cd9692a5bf42d668ed7218b54e>
- <https://git.kernel.org/stable/c/8f3365ed2a5db2ac95ab70a6c47561db39d24537>
- <https://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3>
- <https://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9>
- <https://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198>
- <https://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb>

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-2026-89730>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89730/>. Everything for agents: <https://agentprime.io/llms.txt>.