# power: supply: ucs1002: fix use-after-free on remove

CVE record · `CVE-2026-89463`

- **Identifiers:** `CVE-2026-89463`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:43 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: `81196e2e57fc5b88f6b8ca98372a3dde047aa49d to before b389325e1ad3bfd113aac6a1fcf1658fec2aebb1` (git)
  - affected: `81196e2e57fc5b88f6b8ca98372a3dde047aa49d to before 00c19f8a9a58a318a76fd6f735a8aab3f8ead393` (git)
  - affected: `81196e2e57fc5b88f6b8ca98372a3dde047aa49d to before a9a7bb801c443a4d9fc623c4a47deb53accb70bb` (git)
  - affected: `81196e2e57fc5b88f6b8ca98372a3dde047aa49d to before 2ec4d203ecb06d327af67e32097fe8f774838a40` (git)
  - affected: `81196e2e57fc5b88f6b8ca98372a3dde047aa49d to before 4ca2a4678202f15eb790eb7f1d562061709caea7` (git)
  - affected: `81196e2e57fc5b88f6b8ca98372a3dde047aa49d to before 39b60d615dfa1725c235351fb12bc72e5f8a8d32` (git)
  - affected: `81196e2e57fc5b88f6b8ca98372a3dde047aa49d to before 35242c93d35f391afdc84cef6236b8ad57f1df24` (git)
  - affected: `81196e2e57fc5b88f6b8ca98372a3dde047aa49d to before 609af0ceeaefdfa42cd01dd060b20f2e41f9a232` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.10`
  - unaffected: `before 5.10` (semver)
  - unaffected: `5.10.273 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: `6.12.109 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

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> The Linux kernel's power supply driver for the ucs1002 chip has a use-after-free flaw on driver unbind. A delayed health-polling work item can still run after the driver's data has been freed, and the source does not say what an attacker could do with this beyond the crash or memory corruption it implies. Affected versions are given as 5.10 and later before the listed fixes; upgrade to a fixed kernel release from the 5.10.273, 5.15.221, 6.1.188, or 6.6.157 series or newer.

Written 12 Nov 2026.

## 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 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-2026-89463](https://www.cve.org/CVERecord?id=CVE-2026-89463)
- [NVD: CVE-2026-89463](https://nvd.nist.gov/vuln/detail/CVE-2026-89463)

### References from the CNA

- <https://git.kernel.org/stable/c/b389325e1ad3bfd113aac6a1fcf1658fec2aebb1>
- <https://git.kernel.org/stable/c/00c19f8a9a58a318a76fd6f735a8aab3f8ead393>
- <https://git.kernel.org/stable/c/a9a7bb801c443a4d9fc623c4a47deb53accb70bb>
- <https://git.kernel.org/stable/c/2ec4d203ecb06d327af67e32097fe8f774838a40>
- <https://git.kernel.org/stable/c/4ca2a4678202f15eb790eb7f1d562061709caea7>
- <https://git.kernel.org/stable/c/39b60d615dfa1725c235351fb12bc72e5f8a8d32>
- <https://git.kernel.org/stable/c/35242c93d35f391afdc84cef6236b8ad57f1df24>
- <https://git.kernel.org/stable/c/609af0ceeaefdfa42cd01dd060b20f2e41f9a232>

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-2026-89463>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89463/>. Everything for agents: <https://agentprime.io/llms.txt>.