# btrfs: tree-checker: validate names in ROOT_REF and ROOT_BACKREF

CVE record · `CVE-2026-97415`

- **Identifiers:** `CVE-2026-97415`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 24 Sept 2026
- **Updated:** 3 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 24 Sept 2026, 16:03 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: `b64ec075bded2b30bcd90af5aa5256d2237c885d to before 1370badf6b823ce3cde39a65f46f9e5dc7b4bf43` (git)
  - affected: `b64ec075bded2b30bcd90af5aa5256d2237c885d to before ba6c4fc662853f6662e4db060cf88ee994053e21` (git)
  - affected: `b64ec075bded2b30bcd90af5aa5256d2237c885d to before 9154542070ca7eadb3c764a882f39a127677854b` (git)
  - affected: `b64ec075bded2b30bcd90af5aa5256d2237c885d to before 74f577c722c99248d804eca18e7de7c5e47549d7` (git)
  - affected: `b64ec075bded2b30bcd90af5aa5256d2237c885d to before 0af37c217edf15fa21dac1c40822086df356c6bb` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.18`
  - unaffected: `before 4.18` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2 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:** 0.0013, the 2nd percentile, on 12 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 24 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-97415](https://www.cve.org/CVERecord?id=CVE-2026-97415)
- [NVD: CVE-2026-97415](https://nvd.nist.gov/vuln/detail/CVE-2026-97415)

### References from the CNA

- <https://git.kernel.org/stable/c/1370badf6b823ce3cde39a65f46f9e5dc7b4bf43>
- <https://git.kernel.org/stable/c/ba6c4fc662853f6662e4db060cf88ee994053e21>
- <https://git.kernel.org/stable/c/9154542070ca7eadb3c764a882f39a127677854b>
- <https://git.kernel.org/stable/c/74f577c722c99248d804eca18e7de7c5e47549d7>
- <https://git.kernel.org/stable/c/0af37c217edf15fa21dac1c40822086df356c6bb>

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-2026-97415>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-97415/>. Everything for agents: <https://agentprime.io/llms.txt>.