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CVE-2026-99189VulnerabilityPublished

Microsoft · gpio: mxc: fix race between chained IRQ handler install and probe completion

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99189· Medium

Not known to be exploited · fixed in 261802c14e1a3281987ea8f106701e5ed9652f68 : update Microsoft when convenient.

Data as of 29 Oct 2026, 11:33 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 261802c14e1a3281987ea8f106701e5ed9652f68, 38d44f78f041ffe60c8e2443b99434a199e7541d, 6c1e035d881579a6e4ed1ce5feabb13d23e80a82

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 261802c14e1a3281987ea8f106701e5ed9652f68, 38d44f78f041ffe60c8e2443b99434a199e7541d or 6c1e035d881579a6e4ed1ce5feabb13d23e80a82.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 5f6d1998adeb5374ef248b5ba2e2a0c30ab0f60b, < 261802c14e1a3281987ea8f106701e5ed9652f68
Fixed in
  • 261802c14e1a3281987ea8f106701e5ed9652f68
LinuxLinuxAffected
  • ≥ 5f6d1998adeb5374ef248b5ba2e2a0c30ab0f60b, < 38d44f78f041ffe60c8e2443b99434a199e7541d
Fixed in
  • 38d44f78f041ffe60c8e2443b99434a199e7541d
LinuxLinuxAffected
  • ≥ 5f6d1998adeb5374ef248b5ba2e2a0c30ab0f60b, < 6c1e035d881579a6e4ed1ce5feabb13d23e80a82
Fixed in
  • 6c1e035d881579a6e4ed1ce5feabb13d23e80a82
LinuxLinuxAffected
  • =6.6
Fixed in–

Description

This vulnerability involves a race condition in the GPIO driver for the mxc platform, specifically between the installation of a chained IRQ handler and the completion of the probe process. The issue is identified in Microsoft product version 3.0. No CVSS score or detailed impact information is provided.

References

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