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CVE-2026-98930VulnerabilityPublished Updated

Microsoft · KVM: s390: Fix IRQ injection with SIGP Stop and Store Status

Affects MicrosoftSource GCVE Database

0
Authoritative record:CVE-2026-98930· Medium

Not known to be exploited · fixed in d343407b728a80b74be3c24b59f15e60289ea527 : update Microsoft when convenient.

Data as of 28 Oct 2026, 08:57 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in d343407b728a80b74be3c24b59f15e60289ea527, d0e3bf633f0585a0c2c2105ea7723777d764fae5, a379ac504fcb8c6fc2aa36203f5489b9581eb2e0 +1

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade Linux to d343407b728a80b74be3c24b59f15e60289ea527, d0e3bf633f0585a0c2c2105ea7723777d764fae5, a379ac504fcb8c6fc2aa36203f5489b9581eb2e0 or 3bd77c59576b1d447fd56cc689ae9523a334b924.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 6cddd432e3da5e25eccbc13844d03c871674a62e, < d343407b728a80b74be3c24b59f15e60289ea527
Fixed in
  • d343407b728a80b74be3c24b59f15e60289ea527
LinuxLinuxAffected
  • ≥ 6cddd432e3da5e25eccbc13844d03c871674a62e, < d0e3bf633f0585a0c2c2105ea7723777d764fae5
Fixed in
  • d0e3bf633f0585a0c2c2105ea7723777d764fae5
LinuxLinuxAffected
  • ≥ 6cddd432e3da5e25eccbc13844d03c871674a62e, < a379ac504fcb8c6fc2aa36203f5489b9581eb2e0
Fixed in
  • a379ac504fcb8c6fc2aa36203f5489b9581eb2e0
LinuxLinuxAffected
  • ≥ 6cddd432e3da5e25eccbc13844d03c871674a62e, < 3bd77c59576b1d447fd56cc689ae9523a334b924
Fixed in
  • 3bd77c59576b1d447fd56cc689ae9523a334b924
LinuxLinuxAffected
  • =4.0
Fixed in–

Description

This vulnerability relates to KVM on s390 architecture involving IRQ injection with SIGP Stop and Store Status. The advisory references Microsoft but provides no detailed technical or impact information. The affected versions are 3.0 and 4.0. No CVSS score or exploit information is available.

References

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