CVE-2026-72294

Denial of service via unchecked interrupt number

Published Aug 15, 2026 · Updated Aug 15, 2026

Improper input validation in LoongArch KVM in Linux 6.7 allows local users to trigger invalid interrupts through a vCPU ioctl. kvm_vcpu_ioctl_interrupt() accepts an irq value from userspace and injects it without first checking whether the interrupt number is valid. Low-privileged local access to a LoongArch KVM vCPU file is required, and the documented consequence is denial of service.

CVSS severity8.8
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in LoongArch KVM in Linux 6.7 allows local users to trigger invalid interrupts through a vCPU ioctl. kvm_vcpu_ioctl_interrupt() accepts an irq value from userspace and injects it without first checking whether the interrupt number is valid. Low-privileged local access to a LoongArch KVM vCPU file is required, and the documented consequence is denial of service.

The record

CVE
CVE-2026-72294
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.7
  2. Affected versionversion=f45ad5b8aa9335bc6b30331b739e778f2f730b35 <09b318ab77b7a4fc9987fd98d1525fc55ddc2617
  3. Affected versionversion=f45ad5b8aa9335bc6b30331b739e778f2f730b35 <15469ba0284c7cc01c38493391e9e73b918833c4
  4. Affected versionversion=f45ad5b8aa9335bc6b30331b739e778f2f730b35 <d4574547e04a47ad498149576f65b84475ea6f4c
  5. Affected versionversion=f45ad5b8aa9335bc6b30331b739e778f2f730b35 <efe27b19a15c384cad7c80de399f3107ab070e6d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.7; version=f45ad5b8aa9335bc6b30331b739e778f2f730b35 <09b318ab77b7a4fc9987fd98d1525fc55ddc2617; version=f45ad5b8aa9335bc6b30331b739e778f2f730b35 <15469ba0284c7cc01c38493391e9e73b918833c4; version=f45ad5b8aa9335bc6b30331b739e778f2f730b35 <d4574547e04a47ad498149576f65b84475ea6f4c; version=f45ad5b8aa9335bc6b30331b739e778f2f730b35 <efe27b19a15c384cad7c80de399f3107ab070e6d

Published CVSS scores

6.1Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
6.1SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
8.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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.

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No observations available

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

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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