CVE-2026-64105

Resource leak via missing vGIC failure cleanup

Published Jul 19, 2026 · Updated Jul 19, 2026

A cleanup flaw in the Linux Kernel arm64 KVM vGIC allows attackers to retain private IRQ allocations after failed vCPU creation. The kvm_vgic_vcpu_init() error path in kvm_arch_vcpu_create() omits kvm_vgic_vcpu_destroy(), leaving private IRQs allocated when redistributor iodev registration fails. Reachability requires arm64 KVM and that registration failure; published sources do not identify a further security consequence.

CVSS severityUnavailable
Unscored
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A cleanup flaw in the Linux Kernel arm64 KVM vGIC allows attackers to retain private IRQ allocations after failed vCPU creation. The kvm_vgic_vcpu_init() error path in kvm_arch_vcpu_create() omits kvm_vgic_vcpu_destroy(), leaving private IRQs allocated when redistributor iodev registration fails. Reachability requires arm64 KVM and that registration failure; published sources do not identify a further security consequence.

The record

CVE
CVE-2026-64105
Published
Jul 19, 2026
Updated
Jul 19, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=03b3d00a70b55857439511c1b558ca00a99f4126 <173fb86e5519dbe7aabed1f5fa7456152a4a2e38
  2. Affected versionversion=03b3d00a70b55857439511c1b558ca00a99f4126 <7023900b4988fb6f4a59d304d878003ff562e98d
  3. Affected versionversion=03b3d00a70b55857439511c1b558ca00a99f4126 <e690caa54a6139d98495ac69626807623520babd
  4. Affected versionversion=03b3d00a70b55857439511c1b558ca00a99f4126 <f19c354dbd457759dfcf1195ab4bdba2bb568323
  5. Affected versionversion=6.10

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linux Kernelversion=03b3d00a70b55857439511c1b558ca00a99f4126 <173fb86e5519dbe7aabed1f5fa7456152a4a2e38; version=03b3d00a70b55857439511c1b558ca00a99f4126 <7023900b4988fb6f4a59d304d878003ff562e98d; version=03b3d00a70b55857439511c1b558ca00a99f4126 <e690caa54a6139d98495ac69626807623520babd; version=03b3d00a70b55857439511c1b558ca00a99f4126 <f19c354dbd457759dfcf1195ab4bdba2bb568323; version=6.10

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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