# firmware: arm_scmi: Publish channel state before callbacks

CVE record · `CVE-2026-93093`

- **Identifiers:** `CVE-2026-93093`
- **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: `5c8a47a5a91d4d6e185f758d61997613d9c5d6ac to before 9d349c7b2392b1196e10421421ea9a09fcc5d3cc` (git)
  - affected: `5c8a47a5a91d4d6e185f758d61997613d9c5d6ac to before 50e38091a657ad81385e2aea7e2575e17ac23d79` (git)
  - affected: `5c8a47a5a91d4d6e185f758d61997613d9c5d6ac to before 6f3f532531e4a27d28a2240719d1b05ac11766c6` (git)
  - affected: `5c8a47a5a91d4d6e185f758d61997613d9c5d6ac to before 1bea027f7ef6fb889628b16c568a5f7c07a51b30` (git)
  - affected: `5c8a47a5a91d4d6e185f758d61997613d9c5d6ac to before a1bc587568a4e373db76261dc9561dfc3653917f` (git)
  - affected: `5c8a47a5a91d4d6e185f758d61997613d9c5d6ac to before 0314900dcdde044af0208fed212035dbfaa55843` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.7`
  - unaffected: `before 5.7` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 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 firmware driver is affected from version 5.7. A pending or spurious interrupt during SCMI channel setup can cause a NULL pointer dereference and fault. Upgrade to 6.1.191, 6.6.160, 6.12.110, or 6.18.52 or later in the matching series.

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-2026-93093](https://www.cve.org/CVERecord?id=CVE-2026-93093)
- [NVD: CVE-2026-93093](https://nvd.nist.gov/vuln/detail/CVE-2026-93093)

### References from the CNA

- <https://git.kernel.org/stable/c/9d349c7b2392b1196e10421421ea9a09fcc5d3cc>
- <https://git.kernel.org/stable/c/50e38091a657ad81385e2aea7e2575e17ac23d79>
- <https://git.kernel.org/stable/c/6f3f532531e4a27d28a2240719d1b05ac11766c6>
- <https://git.kernel.org/stable/c/1bea027f7ef6fb889628b16c568a5f7c07a51b30>
- <https://git.kernel.org/stable/c/a1bc587568a4e373db76261dc9561dfc3653917f>
- <https://git.kernel.org/stable/c/0314900dcdde044af0208fed212035dbfaa55843>

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-2026-93093>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93093/>. Everything for agents: <https://agentprime.io/llms.txt>.