# RDMA/rxe: Fix integer overflow in mr_check_range() leading to OOB access

CVE record · `CVE-2026-98365`

- **Identifiers:** `CVE-2026-98365`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 6 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 6 Oct 2026, 08:46 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.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `8700e3e7c4857d28ebaa824509934556da0b3e76 to before b7d2118660545a00b21e83010ded1a231c6fb8c5` (git)
  - affected: `8700e3e7c4857d28ebaa824509934556da0b3e76 to before 5d9426a74fc8cb8f375fcdc19b465a030f9b8cab` (git)
  - affected: `8700e3e7c4857d28ebaa824509934556da0b3e76 to before 2f3b705144e3a3c14184fec6e354680081fe91ec` (git)
  - affected: `8700e3e7c4857d28ebaa824509934556da0b3e76 to before 3431f525718f6b07da308cda6d44f8cb548bbd37` (git)
  - affected: `8700e3e7c4857d28ebaa824509934556da0b3e76 to before d10e2a08799e858d3e71ea4169bcd018f216d444` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.8`
  - unaffected: `before 4.8` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.54 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.8 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0038, the 31st percentile, on 10 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 6 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98365](https://www.cve.org/CVERecord?id=CVE-2026-98365)
- [NVD: CVE-2026-98365](https://nvd.nist.gov/vuln/detail/CVE-2026-98365)

### References from the CNA

- <https://git.kernel.org/stable/c/b7d2118660545a00b21e83010ded1a231c6fb8c5>
- <https://git.kernel.org/stable/c/5d9426a74fc8cb8f375fcdc19b465a030f9b8cab>
- <https://git.kernel.org/stable/c/2f3b705144e3a3c14184fec6e354680081fe91ec>
- <https://git.kernel.org/stable/c/3431f525718f6b07da308cda6d44f8cb548bbd37>
- <https://git.kernel.org/stable/c/d10e2a08799e858d3e71ea4169bcd018f216d444>

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-2026-98365>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98365/>. Everything for agents: <https://agentprime.io/llms.txt>.