# namespace: check a submount for references right before unmounting it

CVE record · `CVE-2026-98990`

- **Identifiers:** `CVE-2026-98990`
- **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: `1064f874abc0d05eeed8993815f584d847b72486 to before cda0c4e502a0f74a191471ce100fb061e5ab35d6` (git)
  - affected: `1064f874abc0d05eeed8993815f584d847b72486 to before 3f55f71291e4332983cd63b288d1f2be3c9c08fc` (git)
  - affected: `1064f874abc0d05eeed8993815f584d847b72486 to before 361f59e7f3f9a219fb5567bf9abc8482a154a399` (git)
  - affected: `1064f874abc0d05eeed8993815f584d847b72486 to before f6394281834492c6516a405a348b545ae698a331` (git)
  - affected: `1064f874abc0d05eeed8993815f584d847b72486 to before 6e4012e571867868b545c91ca9d6095fdb709907` (git)
  - affected: `1064f874abc0d05eeed8993815f584d847b72486 to before d73f04e92c1aab78d96ac6cadb234c8a3a373d22` (git)
  - affected: `1064f874abc0d05eeed8993815f584d847b72486 to before 18902a23ef36f83d32bafc58ae2484e6bb4bb8ef` (git)
  - affected: `1064f874abc0d05eeed8993815f584d847b72486 to before 32bf92416614a1e3ff3524fc6b780259c7aad3ef` (git)
  - affected: `5e6ef5ef6eaf690faad3a7c6c665ebf45d7b6ccf` (git)
  - affected: `839d42687dfce0ed0ea2c6bd8d707cc0e276fbe7` (git)
  - affected: `808e83e5add13152bd4a88346487de68395c136b` (git)
  - affected: `6de9d08a9718ee9c12ba6343c50141c2d633e3dc` (git)
  - and 4 more
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.11`
  - unaffected: `before 4.11` (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:** 0.0019, the 8th 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-2026-98990](https://www.cve.org/CVERecord?id=CVE-2026-98990)
- [NVD: CVE-2026-98990](https://nvd.nist.gov/vuln/detail/CVE-2026-98990)

### References from the CNA

- <https://git.kernel.org/stable/c/cda0c4e502a0f74a191471ce100fb061e5ab35d6>
- <https://git.kernel.org/stable/c/3f55f71291e4332983cd63b288d1f2be3c9c08fc>
- <https://git.kernel.org/stable/c/361f59e7f3f9a219fb5567bf9abc8482a154a399>
- <https://git.kernel.org/stable/c/f6394281834492c6516a405a348b545ae698a331>
- <https://git.kernel.org/stable/c/6e4012e571867868b545c91ca9d6095fdb709907>
- <https://git.kernel.org/stable/c/d73f04e92c1aab78d96ac6cadb234c8a3a373d22>
- <https://git.kernel.org/stable/c/18902a23ef36f83d32bafc58ae2484e6bb4bb8ef>
- <https://git.kernel.org/stable/c/32bf92416614a1e3ff3524fc6b780259c7aad3ef>

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-2026-98990>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98990/>. Everything for agents: <https://agentprime.io/llms.txt>.