# btrfs: clear free space tree creation state on rebuild failure

CVE record · `CVE-2026-98244`

- **Identifiers:** `CVE-2026-98244`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 6 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 6 Oct 2026, 08:45 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: `882af9f13e830c0a4ef696bb72cd5998a5067a93 to before a32bedab8ece9d1f90a1476a5b486a1804dc78ba` (git)
  - affected: `882af9f13e830c0a4ef696bb72cd5998a5067a93 to before b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81` (git)
  - affected: `882af9f13e830c0a4ef696bb72cd5998a5067a93 to before 3565893cc72cdf6b795cf6a33e7ff9605322334d` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.14`
  - unaffected: `before 6.14` (semver)
  - unaffected: `6.18.54 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.8 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:** 0.0017, the 5th percentile, on 10 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 6 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98244](https://www.cve.org/CVERecord?id=CVE-2026-98244)
- [NVD: CVE-2026-98244](https://nvd.nist.gov/vuln/detail/CVE-2026-98244)

### References from the CNA

- <https://git.kernel.org/stable/c/a32bedab8ece9d1f90a1476a5b486a1804dc78ba>
- <https://git.kernel.org/stable/c/b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81>
- <https://git.kernel.org/stable/c/3565893cc72cdf6b795cf6a33e7ff9605322334d>

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-2026-98244>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98244/>. Everything for agents: <https://agentprime.io/llms.txt>.