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CVE-2026-99135VulnerabilityPublished

Microsoft · dm-integrity: fix infinite loop on discard with large tag size

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99135· Medium

Not known to be exploited · fixed in fc512700f1413fed652dac22fa1c4e837210b9c0 : update Microsoft when convenient.

Data as of 29 Oct 2026, 11:49 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in fc512700f1413fed652dac22fa1c4e837210b9c0, 251b44b424920df9204e88a81fb3f78fa48ddd99, 18d80c77b4c7dd20699e81cedfbbff4e9d198f28

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Oct 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 29 Oct 2026.

What to do

Upgrade Linux to fc512700f1413fed652dac22fa1c4e837210b9c0, 251b44b424920df9204e88a81fb3f78fa48ddd99 or 18d80c77b4c7dd20699e81cedfbbff4e9d198f28.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 84597a44a9d86ac949900441cea7da0af0f2f473, < fc512700f1413fed652dac22fa1c4e837210b9c0
Fixed in
  • fc512700f1413fed652dac22fa1c4e837210b9c0
LinuxLinuxAffected
  • ≥ 84597a44a9d86ac949900441cea7da0af0f2f473, < 251b44b424920df9204e88a81fb3f78fa48ddd99
Fixed in
  • 251b44b424920df9204e88a81fb3f78fa48ddd99
LinuxLinuxAffected
  • ≥ 84597a44a9d86ac949900441cea7da0af0f2f473, < 18d80c77b4c7dd20699e81cedfbbff4e9d198f28
Fixed in
  • 18d80c77b4c7dd20699e81cedfbbff4e9d198f28
LinuxLinuxAffected
  • =5.7
Fixed in–

Description

A vulnerability identified as CVE-2026-99135 affects Microsoft software version 3.0, involving an infinite loop triggered by discard operations with large tag sizes in the dm-integrity component. The issue was published on October 29, 2026. No CVSS score or detailed impact information is provided, and no known exploits are reported in the wild.

References

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