# sched_ext: Fix stall when a task enqueued with SCX_ENQ_LAST lands back on its CPU's local DSQ

CVE record · `CVE-2026-99105`

- **Identifiers:** `CVE-2026-99105`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 28 Oct 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 28 Oct 2026, 10:34 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 ea47eec058fc1b6a3c3c54870d24a8bdcb3e204d` (git)
  - affected: `f0e1a0643a59bf1f922fa209cec86a170b784f3f to before 8d891c218016b6145993e082e7f732cb69dd0e29` (git)
  - affected: `f0e1a0643a59bf1f922fa209cec86a170b784f3f to before 396ba6f04da3fd1fb5a3d1c9535bef3f967f4e59` (git)
  - affected: `f0e1a0643a59bf1f922fa209cec86a170b784f3f to before 7a9df76679633cf26e0fea882a684012c6ec245a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.12`
  - unaffected: `before 6.12` (semver)
  - unaffected: `6.12.115 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.59 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.13 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 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 28 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-99105](https://www.cve.org/CVERecord?id=CVE-2026-99105)
- [NVD: CVE-2026-99105](https://nvd.nist.gov/vuln/detail/CVE-2026-99105)

### References from the CNA

- <https://git.kernel.org/stable/c/ea47eec058fc1b6a3c3c54870d24a8bdcb3e204d>
- <https://git.kernel.org/stable/c/8d891c218016b6145993e082e7f732cb69dd0e29>
- <https://git.kernel.org/stable/c/396ba6f04da3fd1fb5a3d1c9535bef3f967f4e59>
- <https://git.kernel.org/stable/c/7a9df76679633cf26e0fea882a684012c6ec245a>

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-2026-99105>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-99105/>. Everything for agents: <https://agentprime.io/llms.txt>.