# iio: buffer: Tie IIO dma fence lock lifetime to the fence

CVE record · `CVE-2026-89940`

- **Identifiers:** `CVE-2026-89940`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:32 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: `3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f to before 6865d79fca17a80fbd60c12550ca9a5e0e20e0eb` (git)
  - affected: `3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f to before 510497e31be4f241103507315a859e2085ccb081` (git)
  - affected: `3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f to before 8b3e221590181a8beb3735bbabf166df02c839b5` (git)
  - affected: `3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f to before f25ec4627d935dedfb5fe83bd2c2678cdcc19611` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.11`
  - unaffected: `before 6.11` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.51 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 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:** 0.0016, the 5th percentile, on 13 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89940](https://www.cve.org/CVERecord?id=CVE-2026-89940)
- [NVD: CVE-2026-89940](https://nvd.nist.gov/vuln/detail/CVE-2026-89940)

### References from the CNA

- <https://git.kernel.org/stable/c/6865d79fca17a80fbd60c12550ca9a5e0e20e0eb>
- <https://git.kernel.org/stable/c/510497e31be4f241103507315a859e2085ccb081>
- <https://git.kernel.org/stable/c/8b3e221590181a8beb3735bbabf166df02c839b5>
- <https://git.kernel.org/stable/c/f25ec4627d935dedfb5fe83bd2c2678cdcc19611>

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-2026-89940>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89940/>. Everything for agents: <https://agentprime.io/llms.txt>.