Unknown severity · Source severity not reportedCVE-2026-98652

KVM: s390: Add missing srcu in kvm_s390_set_irq_state()CVE-2026-98652

Answer in brief

CVE-2026-98652 records a Unknown severity vulnerability in KVM: s390: Add missing srcu in kvm_s390_set_irq_state(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 18, 2026Updated Oct 19, 2026Source checked Oct 25, 2026First seen by HOL Oct 18, 2026Material review Oct 19, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=ba5c1e9b6ceebdc39343cc03eb39f077abd3c571 <7a33007b95c8908ae3980eb2b4c508f8936766df \|\| >=ba5c1e9b6ceebdc39343cc03eb39f077abd3c571 <f3a557067d57ce6ae98d485c8009b223e16f5f36	7a33007b95c8908ae3980eb2b4c508f8936766df, f3a557067d57ce6ae98d485c8009b223e16f5f36
Linux/Linuxgeneric	2.6.26	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 7a33007b95c8908ae3980eb2b4c508f8936766df if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 18, 2026

Sources and claim methodology

Upstream source description

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().

Quoted source text, attributed separately from HOL analysis.