# fs: fix user path of nested backing files

CVE record · `CVE-2026-89768`

- **Identifiers:** `CVE-2026-89768`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:47 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: `5b6aa9a843205da92d860e5011a7b29062a76b8f to before 88c927a63dc717b6d46b20fe13ea713916e49089` (git)
  - affected: `5dfcb15974e7d0f96aca278dd9f1b85df91523ef to before c03114634d342648bd34910aa8fb88007e92cc3c` (git)
  - affected: `6af36aeb147a06dea47c49859cd6ca5659aeb987 to before a35cc21355734e1acb89973d9be90ca8e4c3ed2f` (git)
  - affected: `6af36aeb147a06dea47c49859cd6ca5659aeb987 to before f2381b546e7e6a35c9fcee0d0ccb6c042a9aeb5d` (git)
  - affected: `41c5b269af8b1f0bffcab7766a793f294ae6764e` (git)
  - affected: `27e795afba0018b0ea9460dbad4bd706d1ba5ee0` (git)
  - affected: `6.12.95 to before 6.12.109` (semver)
  - affected: `6.18.38 to before 6.18.50` (semver)
  - affected: `6.6.144 to before 6.7` (semver)
  - affected: `7.0.4 to before 7.1` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `7.1`
  - unaffected: `before 7.1` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 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 14 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 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89768](https://www.cve.org/CVERecord?id=CVE-2026-89768)
- [NVD: CVE-2026-89768](https://nvd.nist.gov/vuln/detail/CVE-2026-89768)

### References from the CNA

- <https://git.kernel.org/stable/c/88c927a63dc717b6d46b20fe13ea713916e49089>
- <https://git.kernel.org/stable/c/c03114634d342648bd34910aa8fb88007e92cc3c>
- <https://git.kernel.org/stable/c/a35cc21355734e1acb89973d9be90ca8e4c3ed2f>
- <https://git.kernel.org/stable/c/f2381b546e7e6a35c9fcee0d0ccb6c042a9aeb5d>

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-2026-89768>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89768/>. Everything for agents: <https://agentprime.io/llms.txt>.