# sched_ext: Fix CPU hotplug hang when a dying CPU's tasks sit in the BPF scheduler

CVE record · `CVE-2026-99085`

- **Identifiers:** `CVE-2026-99085`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 23 Oct 2026
- **Updated:** 23 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 12:45 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: `f0e1a0643a59bf1f922fa209cec86a170b784f3f to before f79cd7a2df3768323fbfb9b0f96adff08fb7eb4c` (git)
  - affected: `f0e1a0643a59bf1f922fa209cec86a170b784f3f to before 638ee6bca19750934ea13f9c325f46fd8ae60064` (git)
  - affected: `f0e1a0643a59bf1f922fa209cec86a170b784f3f to before 173ff9d03ec6373c3158b6e630af33a9b36fd216` (git)
  - affected: `f0e1a0643a59bf1f922fa209cec86a170b784f3f to before d35a535d3e3e71f92a051d94e415f43612c4edfc` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.12`
  - unaffected: `before 6.12` (semver)
  - unaffected: `6.12.114 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.58 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.12 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:** 0.0016, the 5th percentile, on 5 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 23 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-99085](https://www.cve.org/CVERecord?id=CVE-2026-99085)
- [NVD: CVE-2026-99085](https://nvd.nist.gov/vuln/detail/CVE-2026-99085)

### References from the CNA

- <https://git.kernel.org/stable/c/f79cd7a2df3768323fbfb9b0f96adff08fb7eb4c>
- <https://git.kernel.org/stable/c/638ee6bca19750934ea13f9c325f46fd8ae60064>
- <https://git.kernel.org/stable/c/173ff9d03ec6373c3158b6e630af33a9b36fd216>
- <https://git.kernel.org/stable/c/d35a535d3e3e71f92a051d94e415f43612c4edfc>

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-2026-99085>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-99085/>. Everything for agents: <https://agentprime.io/llms.txt>.