# nilfs2: fix infinite loop in nilfs_clean_segments()

CVE record · `CVE-2026-90420`

- **Identifiers:** `CVE-2026-90420`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:09 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: `9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 to before e3e9367dae1a6392cbb14ab0b2ab5edbf39735c3` (git)
  - affected: `9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 to before 217b967ad7887a3e1ebc08f46f6484e081acd4b4` (git)
  - affected: `9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 to before 3bcdbdaac884a4baa59716cf9bd9470c75276e2d` (git)
  - affected: `9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 to before d7afca8e4efbf4c455b4663c29ae59fde2f1b671` (git)
  - affected: `9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 to before c07e5ad6539e7e9350d5c65cbf8adb69d1711b15` (git)
  - affected: `9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 to before 1fc6df85b4954b6fda9c351843aaca3c06f66d8d` (git)
  - affected: `9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 to before 8cea0bc78ac64cb88da49c07f80bf2cf9fb7aff8` (git)
  - affected: `9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 to before ce5a5ad1a8330a2fcfdd9ec2ab341be739e89a18` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.30`
  - unaffected: `before 2.6.30` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 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:** 0.0022, the 12th percentile, on 13 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90420](https://www.cve.org/CVERecord?id=CVE-2026-90420)
- [NVD: CVE-2026-90420](https://nvd.nist.gov/vuln/detail/CVE-2026-90420)

### References from the CNA

- <https://git.kernel.org/stable/c/e3e9367dae1a6392cbb14ab0b2ab5edbf39735c3>
- <https://git.kernel.org/stable/c/217b967ad7887a3e1ebc08f46f6484e081acd4b4>
- <https://git.kernel.org/stable/c/3bcdbdaac884a4baa59716cf9bd9470c75276e2d>
- <https://git.kernel.org/stable/c/d7afca8e4efbf4c455b4663c29ae59fde2f1b671>
- <https://git.kernel.org/stable/c/c07e5ad6539e7e9350d5c65cbf8adb69d1711b15>
- <https://git.kernel.org/stable/c/1fc6df85b4954b6fda9c351843aaca3c06f66d8d>
- <https://git.kernel.org/stable/c/8cea0bc78ac64cb88da49c07f80bf2cf9fb7aff8>
- <https://git.kernel.org/stable/c/ce5a5ad1a8330a2fcfdd9ec2ab341be739e89a18>

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-2026-90420>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-90420/>. Everything for agents: <https://agentprime.io/llms.txt>.