# firmware: arm_scmi: Unregister device notifier before IDR teardown

CVE record · `CVE-2026-93092`

- **Identifiers:** `CVE-2026-93092`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:11 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: `0c0e28e587198b5b4fd742b761cbf7ef9a7fef1c to before 3ec1f79e912fa0e1c119753c819eb3c2591e71b7` (git)
  - affected: `53b8c25df7082edd78a3fc63e359abee0f28fa70 to before 70a26b37389846f1f29a09f7983aa3f45feff529` (git)
  - affected: `53b8c25df7082edd78a3fc63e359abee0f28fa70 to before 492fb49eac24beecd6d3c5e4744a513e626f8dcf` (git)
  - affected: `53b8c25df7082edd78a3fc63e359abee0f28fa70 to before f5e528f631425416f9b39e9d8b385c9f1ceb40d6` (git)
  - affected: `53b8c25df7082edd78a3fc63e359abee0f28fa70 to before 74fcaa0a3f7ad3edfde2e8c6cb8ae457a00e0b7a` (git)
  - affected: `53b8c25df7082edd78a3fc63e359abee0f28fa70 to before 66a0bbf30cc14140fe13f63cd594a7c1ee352b75` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.3`
  - unaffected: `before 6.3` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 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 arm_scmi driver has a removal race in which a notifier callback can run during IDR teardown. The source gives few details on who can trigger it or what the impact is. Upgrade to a fixed Linux release: 6.6.157 or later, 6.12.110 or later, 6.18.52 or later, or 7.2.6 or later.

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:** 0.0017, the 6th 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-93092](https://www.cve.org/CVERecord?id=CVE-2026-93092)
- [NVD: CVE-2026-93092](https://nvd.nist.gov/vuln/detail/CVE-2026-93092)

### References from the CNA

- <https://git.kernel.org/stable/c/3ec1f79e912fa0e1c119753c819eb3c2591e71b7>
- <https://git.kernel.org/stable/c/70a26b37389846f1f29a09f7983aa3f45feff529>
- <https://git.kernel.org/stable/c/492fb49eac24beecd6d3c5e4744a513e626f8dcf>
- <https://git.kernel.org/stable/c/f5e528f631425416f9b39e9d8b385c9f1ceb40d6>
- <https://git.kernel.org/stable/c/74fcaa0a3f7ad3edfde2e8c6cb8ae457a00e0b7a>
- <https://git.kernel.org/stable/c/66a0bbf30cc14140fe13f63cd594a7c1ee352b75>

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-2026-93092>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93092/>. Everything for agents: <https://agentprime.io/llms.txt>.