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CVE-2026-89987VulnerabilityPublished Updated

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

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-89987· High

Not known to be exploited · fixed in fe6cf984939d8e12cb33a99673c8d026c5135e68 : patch Microsoft soon.

Data as of 7 Nov 2026, 12:19 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in fe6cf984939d8e12cb33a99673c8d026c5135e68, fd720d3906877b3d2118cd480027e4bc6648f0c5, effe3cc6d4fdd407457eb30f7b0ef094393f0d64 +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ b5072380eb619786990cd9eab3ade05d09ccd89e, < fe6cf984939d8e12cb33a99673c8d026c5135e68
Fixed in
  • fe6cf984939d8e12cb33a99673c8d026c5135e68
LinuxLinuxAffected
  • ≥ b5072380eb619786990cd9eab3ade05d09ccd89e, < fd720d3906877b3d2118cd480027e4bc6648f0c5
Fixed in
  • fd720d3906877b3d2118cd480027e4bc6648f0c5
LinuxLinuxAffected
  • ≥ b5072380eb619786990cd9eab3ade05d09ccd89e, < effe3cc6d4fdd407457eb30f7b0ef094393f0d64
Fixed in
  • effe3cc6d4fdd407457eb30f7b0ef094393f0d64
LinuxLinuxAffected
  • ≥ b5072380eb619786990cd9eab3ade05d09ccd89e, < 9435cddf1378d149d826bd7bd1448a44bf96868d
Fixed in
  • 9435cddf1378d149d826bd7bd1448a44bf96868d
LinuxLinuxAffected
  • ≥ b5072380eb619786990cd9eab3ade05d09ccd89e, < 79d8c89baa10612c1675972a632c65cdbe0936f6
Fixed in
  • 79d8c89baa10612c1675972a632c65cdbe0936f6
LinuxLinuxAffected
  • ≥ b5072380eb619786990cd9eab3ade05d09ccd89e, < 13f4910d81b62a214cdb28b47237198fa96078a2
Fixed in
  • 13f4910d81b62a214cdb28b47237198fa96078a2

Description

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

References

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