# svcrdma: Reject inline replies that overflow the pull-up buffer

CVE record · `CVE-2026-89530`

- **Identifiers:** `CVE-2026-89530`
- **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:** 11 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:44 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: `e248aa7be86e8179f20ac0931774ecd746f3f5bf to before b73011049dbe909f73fd9620d94ef1757d7af2eb` (git)
  - affected: `e248aa7be86e8179f20ac0931774ecd746f3f5bf to before 8068358f445a11296328ffa7c524701596814a17` (git)
  - affected: `e248aa7be86e8179f20ac0931774ecd746f3f5bf to before fcd91b9957462d398792201c239dffaeff1cc8b2` (git)
  - affected: `e248aa7be86e8179f20ac0931774ecd746f3f5bf to before 1949dd1576f7a8aa161b1330c6125df9d53046d5` (git)
  - affected: `e248aa7be86e8179f20ac0931774ecd746f3f5bf to before 8ec60eb51fae37cd3d334ff26e4a7d6fb21ff7cf` (git)
  - affected: `e248aa7be86e8179f20ac0931774ecd746f3f5bf to before 0fbe20dfe74b783d255bf389a6ea77aa25dc7860` (git)
  - affected: `9b65b18f817d9ada2bf67351f24bdcce6789a0bb` (git)
  - affected: `d564356e1919d1178568c19af410cfc1a9076663` (git)
  - affected: `4.19.22 to before 4.20` (semver)
  - affected: `4.20.9 to before 4.21` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.0`
  - unaffected: `before 5.0` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (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

- 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:** 0.0049, the 42nd 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-2026-89530](https://www.cve.org/CVERecord?id=CVE-2026-89530)
- [NVD: CVE-2026-89530](https://nvd.nist.gov/vuln/detail/CVE-2026-89530)

### References from the CNA

- <https://git.kernel.org/stable/c/b73011049dbe909f73fd9620d94ef1757d7af2eb>
- <https://git.kernel.org/stable/c/8068358f445a11296328ffa7c524701596814a17>
- <https://git.kernel.org/stable/c/fcd91b9957462d398792201c239dffaeff1cc8b2>
- <https://git.kernel.org/stable/c/1949dd1576f7a8aa161b1330c6125df9d53046d5>
- <https://git.kernel.org/stable/c/8ec60eb51fae37cd3d334ff26e4a7d6fb21ff7cf>
- <https://git.kernel.org/stable/c/0fbe20dfe74b783d255bf389a6ea77aa25dc7860>

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-2026-89530>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89530/>. Everything for agents: <https://agentprime.io/llms.txt>.