VulnerabilityPublished 19 Jul 2026Updated 6 Nov 2026

CVE-2026-64105: Linux kernel · KVM: arm64: vgic: Free private_irqs when init fails after allocation

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f19c354dbd457759dfcf1195ab4bdba2bb568323 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:49 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in f19c354dbd457759dfcf1195ab4bdba2bb568323, e690caa54a6139d98495ac69626807623520babd, 7023900b4988fb6f4a59d304d878003ff562e98d +1

Exploitation evidence

Disclosed: evidence found.
CVE published 19 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to f19c354dbd457759dfcf1195ab4bdba2bb568323, e690caa54a6139d98495ac69626807623520babd, 7023900b4988fb6f4a59d304d878003ff562e98d or 173fb86e5519dbe7aabed1f5fa7456152a4a2e38.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 03b3d00a70b55857439511c1b558ca00a99f4126, < f19c354dbd457759dfcf1195ab4bdba2bb568323	Fixed in f19c354dbd457759dfcf1195ab4bdba2bb568323
LinuxLinux	Affected ≥ 03b3d00a70b55857439511c1b558ca00a99f4126, < e690caa54a6139d98495ac69626807623520babd	Fixed in e690caa54a6139d98495ac69626807623520babd
LinuxLinux	Affected ≥ 03b3d00a70b55857439511c1b558ca00a99f4126, < 7023900b4988fb6f4a59d304d878003ff562e98d	Fixed in 7023900b4988fb6f4a59d304d878003ff562e98d
LinuxLinux	Affected ≥ 03b3d00a70b55857439511c1b558ca00a99f4126, < 173fb86e5519dbe7aabed1f5fa7456152a4a2e38	Fixed in 173fb86e5519dbe7aabed1f5fa7456152a4a2e38
LinuxLinux	Affected =6.10	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic: Free private_irqs when init fails after allocation Companion to commit 250f25367b58 ("KVM: arm64: Tear down vGIC on failed vCPU creation"), which added the missing kvm_vgic_vcpu_destroy() call to the kvm_share_hyp() failure path in kvm_arch_vcpu_create(). The kvm_vgic_vcpu_init() failure path immediately above it has the same shape and still needs the same cleanup. Call kvm_vgic_vcpu_destroy() when kvm_vgic_vcpu_init() fails so private IRQs allocated before a redistributor iodev registration failure are released before the failed vCPU is freed.

References

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