# freevxfs: don't BUG() on unknown typed-extent type

CVE record · `CVE-2026-98872`

- **Identifiers:** `CVE-2026-98872`
- **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:** 26 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 11:37 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: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before fe40a19d571cbb584eea46038ee919d8712b2d2c` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 500e9d5bf9eff2096a21b7ac25a0a06ca46ab821` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before f1f2d54a576f0e4133b979e545abcfefd439c300` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 7ada9807e37103b41f586d34e3075e1209182b65` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 1284d687d46953fff9c0d969df108114611aca8b` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 405f13d7b270913e06e8e2b4de568985f94ef7d6` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 704d48d81dc41470e108811c32c577ada66192d4` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.12`
  - unaffected: `before 2.6.12` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0021, the 11th 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-2026-98872](https://www.cve.org/CVERecord?id=CVE-2026-98872)
- [NVD: CVE-2026-98872](https://nvd.nist.gov/vuln/detail/CVE-2026-98872)

### References from the CNA

- <https://git.kernel.org/stable/c/fe40a19d571cbb584eea46038ee919d8712b2d2c>
- <https://git.kernel.org/stable/c/500e9d5bf9eff2096a21b7ac25a0a06ca46ab821>
- <https://git.kernel.org/stable/c/f1f2d54a576f0e4133b979e545abcfefd439c300>
- <https://git.kernel.org/stable/c/7ada9807e37103b41f586d34e3075e1209182b65>
- <https://git.kernel.org/stable/c/1284d687d46953fff9c0d969df108114611aca8b>
- <https://git.kernel.org/stable/c/405f13d7b270913e06e8e2b4de568985f94ef7d6>
- <https://git.kernel.org/stable/c/704d48d81dc41470e108811c32c577ada66192d4>

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-2026-98872>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98872/>. Everything for agents: <https://agentprime.io/llms.txt>.