Microsoft · KVM: s390: Fix IRQ injection with SIGP Stop and Store Status
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in d343407b728a80b74be3c24b59f15e60289ea527 : update Microsoft when convenient.
Data as of 28 Oct 2026, 08:57 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- Patch
- Available – fixed in d343407b728a80b74be3c24b59f15e60289ea527, d0e3bf633f0585a0c2c2105ea7723777d764fae5, a379ac504fcb8c6fc2aa36203f5489b9581eb2e0 +1
Exploitation evidence
Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| 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.