# arm64/fpsimd: signal: Forbid non-streaming SVE payload on SME-only systems

CVE record · `CVE-2026-98745`

- **Identifiers:** `CVE-2026-98745`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:47 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: `05458ee3ff82b31a4564836a84ef20d6c233dfc7 to before 6c5b3ec340921617d965b7c87959560e886e778f` (git)
  - affected: `7dde62f0687c8856b6c0660066c7ee83a6a6f033 to before 052acee9880114879b5c221fc8dad69b786d0938` (git)
  - affected: `7dde62f0687c8856b6c0660066c7ee83a6a6f033 to before f2338929c7663859c0c74dd6fef2c0245066f845` (git)
  - affected: `7dde62f0687c8856b6c0660066c7ee83a6a6f033 to before 2bce6f006cfe0b60e8249fd8d51396d99355cba3` (git)
  - affected: `7dde62f0687c8856b6c0660066c7ee83a6a6f033 to before 88c1c611552b24658eb61244086691c02be2013b` (git)
  - affected: `7dde62f0687c8856b6c0660066c7ee83a6a6f033 to before e060d9069b49fe55f38057dfe592068014652671` (git)
  - affected: `6.1.7 to before 6.1.191` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.2`
  - unaffected: `before 6.2` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.113 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.56 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.10 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:** 0.0017, the 6th percentile, on 7 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 18 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98745](https://www.cve.org/CVERecord?id=CVE-2026-98745)
- [NVD: CVE-2026-98745](https://nvd.nist.gov/vuln/detail/CVE-2026-98745)

### References from the CNA

- <https://git.kernel.org/stable/c/6c5b3ec340921617d965b7c87959560e886e778f>
- <https://git.kernel.org/stable/c/052acee9880114879b5c221fc8dad69b786d0938>
- <https://git.kernel.org/stable/c/f2338929c7663859c0c74dd6fef2c0245066f845>
- <https://git.kernel.org/stable/c/2bce6f006cfe0b60e8249fd8d51396d99355cba3>
- <https://git.kernel.org/stable/c/88c1c611552b24658eb61244086691c02be2013b>
- <https://git.kernel.org/stable/c/e060d9069b49fe55f38057dfe592068014652671>

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-2026-98745>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98745/>. Everything for agents: <https://agentprime.io/llms.txt>.