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CVE-2026-98652

KVM: s390: Add missing srcu in kvm_s390_set_irq_state()

CVSS score

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EPSS probability

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Risk score

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Published

12 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

CVE-2026-98652 Vulnerability in Linux Kernel KVM s390

Sources read

2

Source agreement

Tam uyum

Evidence confidence

%63

Short explanation

The CVE-2026-98652 vulnerability in the Linux kernel KVM s390 subsystem occurs because the kvm_s390_set_irq_state function lacks the necessary kvm->srcu lock during the Store status operation.

Why does it matter?

This vulnerability affects the KVM s390 component within the Linux kernel virtualization infrastructure. The missing locking mechanism can lead to runtime errors that compromise system stability and security.

What should be done?

  • Follow vendor advisories
  • Apply kernel updates
Chain of evidence and sources2 verified claims

CVE-2026-98652 zafiyeti, kvm_s390_set_irq_state fonksiyonunda eksik olan kvm->srcu kilidinden kaynaklanmaktadır.

S0 · daybreach-canonicalS1 · cvelistS2 · nvd

Sorunun giderilmesi için kvm_s390_set_irq_state fonksiyonuna kvm->srcu eklenmesi gerekmektedir.

S0 · daybreach-canonicalS1 · cvelistS2 · nvd
Show the technical text from the sources

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Add missing srcu in kvm_s390_set_irq_state() Like kvm_s390_inject_vcpu(), kvm_s390_set_irq_state() also needs the kvm->srcu or the slots lock when performing the Store status operation. Fix by taking kvm->srcu in kvm_s390_set_irq_state().

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-98652 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1linuxLinux View
2linuxLinux View
Total affected vendors: 1|Products: 2

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
The sources have not yet published a verified CVSS metric.

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

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Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-98652 is associated with the following CWEs:

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CWE-20: Improper Input Validation

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-98652 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Official Sources and Advisories

https://git.kernel.org/stable/c/7a33007b95c8908ae3980eb2b4c508f8936766dfvendor-advisoryhttps://git.kernel.org/stable/c/f3a557067d57ce6ae98d485c8009b223e16f5f36vendor-advisory

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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CVE-2026-98652 · KVM: s390: Add missing srcu in…