# mm/hugetlb: fix swap entry corruption when clearing uffd-wp at fork()

CVE record · `CVE-2026-80893`

- **Identifiers:** `CVE-2026-80893`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 4 Sept 2026
- **Updated:** 6 Nov 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 4 Sept 2026, 17:11 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: `bc70fbf269fdff410b0b6d75c3770b9f59117b90 to before f1b1311c0352873137768bac5a126e491271a747` (git)
  - affected: `bc70fbf269fdff410b0b6d75c3770b9f59117b90 to before 69cb5825d9988c7944bc9f1dc08cb233655405a7` (git)
  - affected: `bc70fbf269fdff410b0b6d75c3770b9f59117b90 to before 8b0de7005b148738d79d6c45594d566489948a68` (git)
  - affected: `bc70fbf269fdff410b0b6d75c3770b9f59117b90 to before 2b9a07002c2f296aa6a9c591213933d3492e3089` (git)
  - affected: `bc70fbf269fdff410b0b6d75c3770b9f59117b90 to before 2fa11c60c9c06bafc19cf4d9efdaa36a38079e87` (git)
  - affected: `bc70fbf269fdff410b0b6d75c3770b9f59117b90 to before 83abe2fd5b3aeb3123b5408a5a91709c5538fb23` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.19`
  - unaffected: `before 5.19` (semver)
  - unaffected: `6.1.183 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.151 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.103 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.44 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.8 to 7.1.*, 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:** 0.0017, the 6th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 4 Sept 2026, 17:11 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-80893)
- 4 Sept 2026, 18:17 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-80893)

## Sources

- [CVE List: CVE-2026-80893](https://www.cve.org/CVERecord?id=CVE-2026-80893)
- [NVD: CVE-2026-80893](https://nvd.nist.gov/vuln/detail/CVE-2026-80893)

### References from the CNA

- <https://git.kernel.org/stable/c/f1b1311c0352873137768bac5a126e491271a747>
- <https://git.kernel.org/stable/c/69cb5825d9988c7944bc9f1dc08cb233655405a7>
- <https://git.kernel.org/stable/c/8b0de7005b148738d79d6c45594d566489948a68>
- <https://git.kernel.org/stable/c/2b9a07002c2f296aa6a9c591213933d3492e3089>
- <https://git.kernel.org/stable/c/2fa11c60c9c06bafc19cf4d9efdaa36a38079e87>
- <https://git.kernel.org/stable/c/83abe2fd5b3aeb3123b5408a5a91709c5538fb23>

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-2026-80893>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-80893/>. Everything for agents: <https://agentprime.io/llms.txt>.