# iio: buffer: Fix potential use-after-free in anonymous buffer release

CVE record · `CVE-2026-89942`

- **Identifiers:** `CVE-2026-89942`
- **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 ab53077511cde811bf3ee219426c522329c41226` (git)
  - affected: `3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f to before f1f8f0e8e0af9cae8150658dc7bb51332f984893` (git)
  - affected: `3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f to before 6d4bdbf7bad63e759bf20259c527f69a1209e3dd` (git)
  - affected: `3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f to before 6288b593e76eb10329326f2cd51e32557203b9e5` (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 15 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-2026-89942](https://www.cve.org/CVERecord?id=CVE-2026-89942)
- [NVD: CVE-2026-89942](https://nvd.nist.gov/vuln/detail/CVE-2026-89942)

### References from the CNA

- <https://git.kernel.org/stable/c/ab53077511cde811bf3ee219426c522329c41226>
- <https://git.kernel.org/stable/c/f1f8f0e8e0af9cae8150658dc7bb51332f984893>
- <https://git.kernel.org/stable/c/6d4bdbf7bad63e759bf20259c527f69a1209e3dd>
- <https://git.kernel.org/stable/c/6288b593e76eb10329326f2cd51e32557203b9e5>

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-2026-89942>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89942/>. Everything for agents: <https://agentprime.io/llms.txt>.