# i2c: mux: Fix channel node leak on adapter add failure

CVE record · `CVE-2026-89982`

- **Identifiers:** `CVE-2026-89982`
- **State:** Confirmed
- **Severity:** No CVSS score
- **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: `bc45449b1444611d68466ae7f45f235420d79019 to before 4f42f70afd2447f3c82ca69d1e03466a75348ba9` (git)
  - affected: `bc45449b1444611d68466ae7f45f235420d79019 to before 4c9bc46a2a4afb7a11c48d33bdf19febab431015` (git)
  - affected: `bc45449b1444611d68466ae7f45f235420d79019 to before dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1` (git)
  - affected: `bc45449b1444611d68466ae7f45f235420d79019 to before 0927153f2abf48b6cc3e5f27063a17f7a8d47f38` (git)
  - affected: `bc45449b1444611d68466ae7f45f235420d79019 to before b580f062b24c4eef562f08f210c028adb34ef14e` (git)
  - affected: `bc45449b1444611d68466ae7f45f235420d79019 to before 2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5` (git)
  - affected: `bc45449b1444611d68466ae7f45f235420d79019 to before 694e7e6edf249723ca7d3ef77c2ca1badfc78dc4` (git)
  - affected: `bc45449b1444611d68466ae7f45f235420d79019 to before 385c7af4e3b95d0769fd211831674e83b16a2ebf` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.5`
  - unaffected: `before 3.5` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (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: `6.12.110 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0022, the 12th 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-2026-89982](https://www.cve.org/CVERecord?id=CVE-2026-89982)
- [NVD: CVE-2026-89982](https://nvd.nist.gov/vuln/detail/CVE-2026-89982)

### References from the CNA

- <https://git.kernel.org/stable/c/4f42f70afd2447f3c82ca69d1e03466a75348ba9>
- <https://git.kernel.org/stable/c/4c9bc46a2a4afb7a11c48d33bdf19febab431015>
- <https://git.kernel.org/stable/c/dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1>
- <https://git.kernel.org/stable/c/0927153f2abf48b6cc3e5f27063a17f7a8d47f38>
- <https://git.kernel.org/stable/c/b580f062b24c4eef562f08f210c028adb34ef14e>
- <https://git.kernel.org/stable/c/2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5>
- <https://git.kernel.org/stable/c/694e7e6edf249723ca7d3ef77c2ca1badfc78dc4>
- <https://git.kernel.org/stable/c/385c7af4e3b95d0769fd211831674e83b16a2ebf>

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-2026-89982>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-89982/>. Everything for agents: <https://agentprime.io/llms.txt>.