# PCI/sysfs: Fix out-of-bounds read in pci_write_legacy_io()

CVE record · `CVE-2026-89722`

- **Identifiers:** `CVE-2026-89722`
- **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: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e892f05f1f790d5721cd8e3c561ed76da7e08bae` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 7a99e9c7011905734cc2739038f2a224b6be0d1f` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before dc76258d0132df1d831a5a29758bd448ca9c566e` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.12`
  - unaffected: `before 2.6.12` (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-2026-89722](https://www.cve.org/CVERecord?id=CVE-2026-89722)
- [NVD: CVE-2026-89722](https://nvd.nist.gov/vuln/detail/CVE-2026-89722)

### References from the CNA

- <https://git.kernel.org/stable/c/e892f05f1f790d5721cd8e3c561ed76da7e08bae>
- <https://git.kernel.org/stable/c/7a99e9c7011905734cc2739038f2a224b6be0d1f>
- <https://git.kernel.org/stable/c/dc76258d0132df1d831a5a29758bd448ca9c566e>

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-2026-89722>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89722/>. Everything for agents: <https://agentprime.io/llms.txt>.