# i2c: core: fix debugfs UAF on adapter removal

CVE record · `CVE-2026-89983`

- **Identifiers:** `CVE-2026-89983`
- **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: `0e8926abfd7aee220e44be5566affd7a8580b50e to before dc33a9762538b3250ed6b5644a4d44c748be33a6` (git)
  - affected: `e2a268b0f512fb18ae5961b1fdfaf610ed6bd661 to before 1f1bcd4eca6caa3e4258d9a31925112539406eb6` (git)
  - affected: `4a2be5a72865bdd219b2d8c327b9fa03e87a4a9e to before f9094ace03e0a532cc6505d2e97b61ae738da4ed` (git)
  - affected: `73febd775bdbdb98c81255ff85773ac410ded5c4 to before 643fb872aa04342d27dbef52b2b3cf3fe71b2c7b` (git)
  - affected: `73febd775bdbdb98c81255ff85773ac410ded5c4 to before 112b3d48084c820bbccf41d9783fd122e3ac4cb0` (git)
  - affected: `73febd775bdbdb98c81255ff85773ac410ded5c4 to before 552836be2d95c688eede6371f85532abe1a71232` (git)
  - affected: `73febd775bdbdb98c81255ff85773ac410ded5c4 to before b15b548d52b43ba8ac4652bc2c7244a8dd1e9622` (git)
  - affected: `5.15.168 to before 5.15.221` (semver)
  - affected: `6.1.113 to before 6.1.188` (semver)
  - affected: `6.6.55 to before 6.6.157` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.8`
  - unaffected: `before 6.8` (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:** 0.0021, the 11th 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89983](https://www.cve.org/CVERecord?id=CVE-2026-89983)
- [NVD: CVE-2026-89983](https://nvd.nist.gov/vuln/detail/CVE-2026-89983)

### References from the CNA

- <https://git.kernel.org/stable/c/dc33a9762538b3250ed6b5644a4d44c748be33a6>
- <https://git.kernel.org/stable/c/1f1bcd4eca6caa3e4258d9a31925112539406eb6>
- <https://git.kernel.org/stable/c/f9094ace03e0a532cc6505d2e97b61ae738da4ed>
- <https://git.kernel.org/stable/c/643fb872aa04342d27dbef52b2b3cf3fe71b2c7b>
- <https://git.kernel.org/stable/c/112b3d48084c820bbccf41d9783fd122e3ac4cb0>
- <https://git.kernel.org/stable/c/552836be2d95c688eede6371f85532abe1a71232>
- <https://git.kernel.org/stable/c/b15b548d52b43ba8ac4652bc2c7244a8dd1e9622>

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-2026-89983>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89983/>. Everything for agents: <https://agentprime.io/llms.txt>.