CVE-2026-98930: Linux kernel · KVM: s390: Fix IRQ injection with SIGP Stop and Store Status
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in d343407b728a80b74be3c24b59f15e60289ea527 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 16:00 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- 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 kernel 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– |
AI-suggested
A patch is available that fixes the issue by deferring the store status operation outside the spinlock. Users should update to the fixed Linux kernel versions identified by the commit hashes provided. Since this is a kernel-level fix, applying the official kernel updates is the recommended mitigation.
Description
A vulnerability in the Linux kernel's KVM subsystem for s390 architecture related to IRQ injection with SIGP Stop and Store Status has been fixed. The issue involves storing status information while holding a spinlock, which can cause faults due to writing into userspace. The fix changes the behavior to defer the store status operation outside the spinlock to avoid this problem.
References
- git.kernel.org/stable/c/3bd77c59576b1d447fd56cc689ae9523a334b924 (opens in a new tab)
- git.kernel.org/stable/c/a379ac504fcb8c6fc2aa36203f5489b9581eb2e0 (opens in a new tab)
- git.kernel.org/stable/c/d0e3bf633f0585a0c2c2105ea7723777d764fae5 (opens in a new tab)
- git.kernel.org/stable/c/d343407b728a80b74be3c24b59f15e60289ea527 (opens in a new tab)