# mm/huge_memory: transfer the pmd dirty bit to the folio on zap

CVE record · `CVE-2026-89987`

- **Identifiers:** `CVE-2026-89987`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:33 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: `b5072380eb619786990cd9eab3ade05d09ccd89e to before 79d8c89baa10612c1675972a632c65cdbe0936f6` (git)
  - affected: `b5072380eb619786990cd9eab3ade05d09ccd89e to before 13f4910d81b62a214cdb28b47237198fa96078a2` (git)
  - affected: `b5072380eb619786990cd9eab3ade05d09ccd89e to before 7a4c3f7b47ba34b021a7747081f330bfb76a4271` (git)
  - affected: `b5072380eb619786990cd9eab3ade05d09ccd89e to before 6e904f9e8cb0e39f60e1cdbea679f89346a563c2` (git)
  - affected: `b5072380eb619786990cd9eab3ade05d09ccd89e to before fd720d3906877b3d2118cd480027e4bc6648f0c5` (git)
  - affected: `b5072380eb619786990cd9eab3ade05d09ccd89e to before effe3cc6d4fdd407457eb30f7b0ef094393f0d64` (git)
  - affected: `b5072380eb619786990cd9eab3ade05d09ccd89e to before 9435cddf1378d149d826bd7bd1448a44bf96868d` (git)
  - affected: `b5072380eb619786990cd9eab3ade05d09ccd89e to before fe6cf984939d8e12cb33a99673c8d026c5135e68` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.8`
  - unaffected: `before 4.8` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.114 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 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:** 0.0022, the 12th percentile, on 13 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89987](https://www.cve.org/CVERecord?id=CVE-2026-89987)
- [NVD: CVE-2026-89987](https://nvd.nist.gov/vuln/detail/CVE-2026-89987)

### References from the CNA

- <https://git.kernel.org/stable/c/79d8c89baa10612c1675972a632c65cdbe0936f6>
- <https://git.kernel.org/stable/c/13f4910d81b62a214cdb28b47237198fa96078a2>
- <https://git.kernel.org/stable/c/7a4c3f7b47ba34b021a7747081f330bfb76a4271>
- <https://git.kernel.org/stable/c/6e904f9e8cb0e39f60e1cdbea679f89346a563c2>
- <https://git.kernel.org/stable/c/fd720d3906877b3d2118cd480027e4bc6648f0c5>
- <https://git.kernel.org/stable/c/effe3cc6d4fdd407457eb30f7b0ef094393f0d64>
- <https://git.kernel.org/stable/c/9435cddf1378d149d826bd7bd1448a44bf96868d>
- <https://git.kernel.org/stable/c/fe6cf984939d8e12cb33a99673c8d026c5135e68>

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-2026-89987>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89987/>. Everything for agents: <https://agentprime.io/llms.txt>.