# svcrdma: Fix offset arithmetic in read_chunk_range

CVE record · `CVE-2026-89533`

- **Identifiers:** `CVE-2026-89533`
- **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:** 19 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: `d7cc73972661be4a02a1b09f1d9b3283c6c05154 to before 10873311f91db9454e2fadbf9866bc819e0646d9` (git)
  - affected: `d7cc73972661be4a02a1b09f1d9b3283c6c05154 to before addbf02dfe3b25e7e38e03bbd4e2a6ed86a14be7` (git)
  - affected: `d7cc73972661be4a02a1b09f1d9b3283c6c05154 to before cba8543c18cf42fd80fd63effb6df6ff4f7e73ce` (git)
  - affected: `d7cc73972661be4a02a1b09f1d9b3283c6c05154 to before 6ee4dc7476b3abc92ec1d444533a559f33f59561` (git)
  - affected: `d7cc73972661be4a02a1b09f1d9b3283c6c05154 to before a46b35f213c2426f5d6a0458a8f7e873fc59cdfd` (git)
  - affected: `d7cc73972661be4a02a1b09f1d9b3283c6c05154 to before 4493c96bbd0068fadf69cbae8d13426202e34cdc` (git)
  - affected: `d7cc73972661be4a02a1b09f1d9b3283c6c05154 to before 4a44c140cc2f3643a39e258bb0c0ab9d0f494f5e` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.11`
  - unaffected: `before 5.11` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 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:** 0.0050, the 43rd 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-2026-89533](https://www.cve.org/CVERecord?id=CVE-2026-89533)
- [NVD: CVE-2026-89533](https://nvd.nist.gov/vuln/detail/CVE-2026-89533)

### References from the CNA

- <https://git.kernel.org/stable/c/10873311f91db9454e2fadbf9866bc819e0646d9>
- <https://git.kernel.org/stable/c/addbf02dfe3b25e7e38e03bbd4e2a6ed86a14be7>
- <https://git.kernel.org/stable/c/cba8543c18cf42fd80fd63effb6df6ff4f7e73ce>
- <https://git.kernel.org/stable/c/6ee4dc7476b3abc92ec1d444533a559f33f59561>
- <https://git.kernel.org/stable/c/a46b35f213c2426f5d6a0458a8f7e873fc59cdfd>
- <https://git.kernel.org/stable/c/4493c96bbd0068fadf69cbae8d13426202e34cdc>
- <https://git.kernel.org/stable/c/4a44c140cc2f3643a39e258bb0c0ab9d0f494f5e>

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-2026-89533>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89533/>. Everything for agents: <https://agentprime.io/llms.txt>.