# parisc: eisa: Fix infinite loop when parsing invalid IRQ value

CVE record · `CVE-2026-89964`

- **Identifiers:** `CVE-2026-89964`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:32 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: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 68659b627770f3c8d8f578e8ddee78a07d5f1d0e` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 8640ade22369e248f77fbdd31a9d71b338499eef` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 21f063e3c2b11fb9078ccdfd3b23634313ce4f0c` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 62d88e93ef5e1e04041e347945f7d7510eba1797` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before bb10d54b74845eb4547baa1b9e908ecd32aa64e1` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 3e2691eeee83a819125dba3f42c74e1b6730d5cd` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 16a62a3f2128b3d86fefc082d8f631becd02bff5` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 8b585431a16cfb9d8f2955a9fa0787ce3dceb3c2` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.12`
  - unaffected: `before 2.6.12` (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: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.51 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 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 13 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89964](https://www.cve.org/CVERecord?id=CVE-2026-89964)
- [NVD: CVE-2026-89964](https://nvd.nist.gov/vuln/detail/CVE-2026-89964)

### References from the CNA

- <https://git.kernel.org/stable/c/68659b627770f3c8d8f578e8ddee78a07d5f1d0e>
- <https://git.kernel.org/stable/c/8640ade22369e248f77fbdd31a9d71b338499eef>
- <https://git.kernel.org/stable/c/21f063e3c2b11fb9078ccdfd3b23634313ce4f0c>
- <https://git.kernel.org/stable/c/62d88e93ef5e1e04041e347945f7d7510eba1797>
- <https://git.kernel.org/stable/c/bb10d54b74845eb4547baa1b9e908ecd32aa64e1>
- <https://git.kernel.org/stable/c/3e2691eeee83a819125dba3f42c74e1b6730d5cd>
- <https://git.kernel.org/stable/c/16a62a3f2128b3d86fefc082d8f631becd02bff5>
- <https://git.kernel.org/stable/c/8b585431a16cfb9d8f2955a9fa0787ce3dceb3c2>

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-2026-89964>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89964/>. Everything for agents: <https://agentprime.io/llms.txt>.