# cxl/ras: Fix cxl_rch_get_aer_info() out-of-bounds AER register read

CVE record · `CVE-2026-89731`

- **Identifiers:** `CVE-2026-89731`
- **State:** Confirmed
- **Severity:** CVSS 7.1 High
- **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: `6ac07883dbb5f60f7bc56a13b7a84a382aa9c1ab to before 7f5a2a330dde8e8aa2dd80e1f3e05b6ada049607` (git)
  - affected: `6ac07883dbb5f60f7bc56a13b7a84a382aa9c1ab to before 8bd3523df1319edc61cd391e695c84a4618516df` (git)
  - affected: `6ac07883dbb5f60f7bc56a13b7a84a382aa9c1ab to before 8e3d9dbb25d3ddbe72b4542ec4f7c4e622fe0ced` (git)
  - affected: `6ac07883dbb5f60f7bc56a13b7a84a382aa9c1ab to before 29458e62d0829cbc99435f3e44fd560f9bbf1da7` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.7`
  - unaffected: `before 6.7` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.51 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

- 7.1 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H`, from CNA (Linux)

- **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 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89731](https://www.cve.org/CVERecord?id=CVE-2026-89731)
- [NVD: CVE-2026-89731](https://nvd.nist.gov/vuln/detail/CVE-2026-89731)

### References from the CNA

- <https://git.kernel.org/stable/c/7f5a2a330dde8e8aa2dd80e1f3e05b6ada049607>
- <https://git.kernel.org/stable/c/8bd3523df1319edc61cd391e695c84a4618516df>
- <https://git.kernel.org/stable/c/8e3d9dbb25d3ddbe72b4542ec4f7c4e622fe0ced>
- <https://git.kernel.org/stable/c/29458e62d0829cbc99435f3e44fd560f9bbf1da7>

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-2026-89731>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89731/>. Everything for agents: <https://agentprime.io/llms.txt>.