# namespace: don't copy an unmounted mount tree

CVE record · `CVE-2026-98992`

- **Identifiers:** `CVE-2026-98992`
- **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:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 12:20 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: `e149ed2b805fefdccf7ccdfc19eca22fdd4514ac to before 94d05b62dc7aea236db20166e79ee002e466393a` (git)
  - affected: `e149ed2b805fefdccf7ccdfc19eca22fdd4514ac to before 07c6a8f004bcc58b4ccf993e6efa7b9b8b4a1b8b` (git)
  - affected: `e149ed2b805fefdccf7ccdfc19eca22fdd4514ac to before 31cf157298271392ab5fb0805b28d37c8d7a8057` (git)
  - affected: `e149ed2b805fefdccf7ccdfc19eca22fdd4514ac to before 86a2d56b1960720bf1844441c0890621e9db2f25` (git)
  - affected: `e149ed2b805fefdccf7ccdfc19eca22fdd4514ac to before 7e037b1fd339d865737c8accd29abcf40130a5a0` (git)
  - affected: `e149ed2b805fefdccf7ccdfc19eca22fdd4514ac to before b47b40c4f058418f9707454543179df240796aad` (git)
  - affected: `e149ed2b805fefdccf7ccdfc19eca22fdd4514ac to before 8d3527457e183cedee3003c2897314da49488311` (git)
  - affected: `e149ed2b805fefdccf7ccdfc19eca22fdd4514ac to before 8bacbf6be959973b28b691713a872c12eae69eec` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.19`
  - unaffected: `before 3.19` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (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: `6.18.57 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.11 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:** 0.0018, the 7th percentile, on 6 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-2026-98992](https://www.cve.org/CVERecord?id=CVE-2026-98992)
- [NVD: CVE-2026-98992](https://nvd.nist.gov/vuln/detail/CVE-2026-98992)

### References from the CNA

- <https://git.kernel.org/stable/c/94d05b62dc7aea236db20166e79ee002e466393a>
- <https://git.kernel.org/stable/c/07c6a8f004bcc58b4ccf993e6efa7b9b8b4a1b8b>
- <https://git.kernel.org/stable/c/31cf157298271392ab5fb0805b28d37c8d7a8057>
- <https://git.kernel.org/stable/c/86a2d56b1960720bf1844441c0890621e9db2f25>
- <https://git.kernel.org/stable/c/7e037b1fd339d865737c8accd29abcf40130a5a0>
- <https://git.kernel.org/stable/c/b47b40c4f058418f9707454543179df240796aad>
- <https://git.kernel.org/stable/c/8d3527457e183cedee3003c2897314da49488311>
- <https://git.kernel.org/stable/c/8bacbf6be959973b28b691713a872c12eae69eec>

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-2026-98992>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98992/>. Everything for agents: <https://agentprime.io/llms.txt>.