# RDMA/rxe: validate access flags before swapping the MR's PD

CVE record · `CVE-2026-98366`

- **Identifiers:** `CVE-2026-98366`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **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.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `544c7f62cf32db2bd358f1e8a40a98bf98fa2a5c to before 08f12745cb72981aa2cabe214af0c7a42a856f0a` (git)
  - affected: `544c7f62cf32db2bd358f1e8a40a98bf98fa2a5c to before 7230cc456d4bb2221c20c5f1d22b38b8576aa16f` (git)
  - affected: `544c7f62cf32db2bd358f1e8a40a98bf98fa2a5c to before fe602c91a52e161ace4afd5bdb8f33270c554c6f` (git)
  - affected: `544c7f62cf32db2bd358f1e8a40a98bf98fa2a5c to before 4dd7a53f1c5b44693c26dac4b9b5bd5bb9d604c8` (git)
  - affected: `544c7f62cf32db2bd358f1e8a40a98bf98fa2a5c to before ae36a5b609ae79f4de966328b78d2584be9719a4` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.5`
  - unaffected: `before 6.5` (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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0012, the 1st percentile, on 8 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-2026-98366](https://www.cve.org/CVERecord?id=CVE-2026-98366)
- [NVD: CVE-2026-98366](https://nvd.nist.gov/vuln/detail/CVE-2026-98366)

### References from the CNA

- <https://git.kernel.org/stable/c/08f12745cb72981aa2cabe214af0c7a42a856f0a>
- <https://git.kernel.org/stable/c/7230cc456d4bb2221c20c5f1d22b38b8576aa16f>
- <https://git.kernel.org/stable/c/fe602c91a52e161ace4afd5bdb8f33270c554c6f>
- <https://git.kernel.org/stable/c/4dd7a53f1c5b44693c26dac4b9b5bd5bb9d604c8>
- <https://git.kernel.org/stable/c/ae36a5b609ae79f4de966328b78d2584be9719a4>

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-2026-98366>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98366/>. Everything for agents: <https://agentprime.io/llms.txt>.