# xfs: don't let hidden_space go negative in xfs_metafile_resv_init

CVE record · `CVE-2026-98446`

- **Identifiers:** `CVE-2026-98446`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:14 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: `1df8d75030b787a9fae270b59b93eef809dd2011 to before 930a9c1c321efdaa3e7f8caecb0479cee3baf342` (git)
  - affected: `1df8d75030b787a9fae270b59b93eef809dd2011 to before f0d8352a39f4a2e329ae45b71bb0d49e2ca0a6dc` (git)
  - affected: `1df8d75030b787a9fae270b59b93eef809dd2011 to before 476582d754cdc5110f806001417fea6c77824c13` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.15`
  - unaffected: `before 6.15` (semver)
  - unaffected: `6.18.55 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.9 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 6th percentile, on 8 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 18 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98446](https://www.cve.org/CVERecord?id=CVE-2026-98446)
- [NVD: CVE-2026-98446](https://nvd.nist.gov/vuln/detail/CVE-2026-98446)

### References from the CNA

- <https://git.kernel.org/stable/c/930a9c1c321efdaa3e7f8caecb0479cee3baf342>
- <https://git.kernel.org/stable/c/f0d8352a39f4a2e329ae45b71bb0d49e2ca0a6dc>
- <https://git.kernel.org/stable/c/476582d754cdc5110f806001417fea6c77824c13>

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-2026-98446>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98446/>. Everything for agents: <https://agentprime.io/llms.txt>.