# unshare: don't drop active namespace references that were never taken

CVE record · `CVE-2026-98983`

- **Identifiers:** `CVE-2026-98983`
- **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, 12:20 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: `a98621a0f187a934c115dcfe79a49520ae892111 to before 56fe03a0c05dba4c5f6a23c391f96de1614a098c` (git)
  - affected: `a98621a0f187a934c115dcfe79a49520ae892111 to before 0b6f31a3c0b16066f812e94b52a704174a6f23cd` (git)
  - affected: `27ae6b17c9ba7ff353ab0906297f08aa845782b4` (git)
  - affected: `297261b343371c4f0b31055d53d285138ec21565` (git)
  - affected: `813a47b0309097da71781ee4ac11922e39b67d55` (git)
  - affected: `6e608e3e5ce12ce7fd21e46212eccca37f917d0e` (git)
  - affected: `a261fccdb4ac58ec5ba6aa1d92a6cc418fff301f` (git)
  - affected: `665dc1ed16357988d439fc5bbc860ee36f540d81` (git)
  - affected: `5.15.209 to before 5.16` (semver)
  - affected: `6.1.175 to before 6.2` (semver)
  - affected: `6.6.141 to before 6.7` (semver)
  - affected: `6.12.91 to before 6.13` (semver)
  - and 2 more
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `7.1`
  - unaffected: `before 7.1` (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:** 0.0016, the 5th 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-2026-98983](https://www.cve.org/CVERecord?id=CVE-2026-98983)
- [NVD: CVE-2026-98983](https://nvd.nist.gov/vuln/detail/CVE-2026-98983)

### References from the CNA

- <https://git.kernel.org/stable/c/56fe03a0c05dba4c5f6a23c391f96de1614a098c>
- <https://git.kernel.org/stable/c/0b6f31a3c0b16066f812e94b52a704174a6f23cd>

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-2026-98983>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98983/>. Everything for agents: <https://agentprime.io/llms.txt>.