# namespace: don't let a pseudo dentry become the root of a mount

CVE record · `CVE-2026-98982`

- **Identifiers:** `CVE-2026-98982`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 23 Oct 2026
- **Updated:** 24 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 12:19 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: `35f96de04127d332a5c5e8a155d31f452f88c76d to before a256e31e0c54c4c37d2523aa52faabdcdd2ebc07` (git)
  - affected: `35f96de04127d332a5c5e8a155d31f452f88c76d to before 7e1c466011ba9e64d43075396badc03191bcee44` (git)
  - affected: `35f96de04127d332a5c5e8a155d31f452f88c76d to before 00287afa7cd989efdbf5822b7efac33cce7d489a` (git)
  - affected: `35f96de04127d332a5c5e8a155d31f452f88c76d to before b138e16fb1e81376cea89f727dda7bfccd140de4` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.9`
  - unaffected: `before 6.9` (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

- 7.8 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0016, the 5th 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 23 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98982](https://www.cve.org/CVERecord?id=CVE-2026-98982)
- [NVD: CVE-2026-98982](https://nvd.nist.gov/vuln/detail/CVE-2026-98982)

### References from the CNA

- <https://git.kernel.org/stable/c/a256e31e0c54c4c37d2523aa52faabdcdd2ebc07>
- <https://git.kernel.org/stable/c/7e1c466011ba9e64d43075396badc03191bcee44>
- <https://git.kernel.org/stable/c/00287afa7cd989efdbf5822b7efac33cce7d489a>
- <https://git.kernel.org/stable/c/b138e16fb1e81376cea89f727dda7bfccd140de4>

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-2026-98982>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98982/>. Everything for agents: <https://agentprime.io/llms.txt>.