CVE-2022-50228

Host crash via unchecked GIF assertion

Published Jun 18, 2025 · Updated May 11, 2026

Denial of service in Linux KVM SVM allows local users controlling a virtual machine monitor to crash the host via a crafted vCPU event. The svm_inject_irq function executes a BUG_ON assertion when KVM_SET_VCPU_EVENTS requests interrupt injection while the global interrupt flag is clear. Access to the KVM vCPU ioctl path is required, and successful exploitation terminates host kernel operation rather than merely stopping the guest.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux KVM SVM allows local users controlling a virtual machine monitor to crash the host via a crafted vCPU event. The svm_inject_irq function executes a BUG_ON assertion when KVM_SET_VCPU_EVENTS requests interrupt injection while the global interrupt flag is clear. Access to the KVM vCPU ioctl path is required, and successful exploitation terminates host kernel operation rather than merely stopping the guest.

The record

CVE
CVE-2022-50228
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=219b65dcf6c0bad83d51bfa12e25891c02de2414 <2c49adeb020995236e63722ef6d0bee14372f471
  2. Affected versionversion=219b65dcf6c0bad83d51bfa12e25891c02de2414 <2eee1dba70f57148fc7f8252613bfae6bd4b04e3
  3. Affected versionversion=219b65dcf6c0bad83d51bfa12e25891c02de2414 <3d4e2d884da6312df7c9b85fbf671de49204ead6
  4. Affected versionversion=219b65dcf6c0bad83d51bfa12e25891c02de2414 <68e1313bb8809e8addcd9431f2bfea0e8ddbca80
  5. Affected versionversion=219b65dcf6c0bad83d51bfa12e25891c02de2414 <6afe88fbb40eac3291a8728688d61fdc745d8008
  6. Affected versionversion=219b65dcf6c0bad83d51bfa12e25891c02de2414 <6fcbab82ccbcde915644085f73d3487938bda42d
  7. Affected versionversion=219b65dcf6c0bad83d51bfa12e25891c02de2414 <8bb683490278005b4caf61e22b0828a04d282e86
  8. Affected versionversion=219b65dcf6c0bad83d51bfa12e25891c02de2414 <c3396c1c8b87510f2ac2a674948156577559d42d
  9. Affected versionversion=219b65dcf6c0bad83d51bfa12e25891c02de2414 <f17c31c48e5cde9895a491d91c424eeeada3e134
  10. Affected versionversion=2.6.32

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=219b65dcf6c0bad83d51bfa12e25891c02de2414 <2c49adeb020995236e63722ef6d0bee14372f471; version=219b65dcf6c0bad83d51bfa12e25891c02de2414 <2eee1dba70f57148fc7f8252613bfae6bd4b04e3; version=219b65dcf6c0bad83d51bfa12e25891c02de2414 <3d4e2d884da6312df7c9b85fbf671de49204ead6; version=219b65dcf6c0bad83d51bfa12e25891c02de2414 <68e1313bb8809e8addcd9431f2bfea0e8ddbca80; version=219b65dcf6c0bad83d51bfa12e25891c02de2414 <6afe88fbb40eac3291a8728688d61fdc745d8008; version=219b65dcf6c0bad83d51bfa12e25891c02de2414 <6fcbab82ccbcde915644085f73d3487938bda42d; version=219b65dcf6c0bad83d51bfa12e25891c02de2414 <8bb683490278005b4caf61e22b0828a04d282e86; version=219b65dcf6c0bad83d51bfa12e25891c02de2414 <c3396c1c8b87510f2ac2a674948156577559d42d; version=219b65dcf6c0bad83d51bfa12e25891c02de2414 <f17c31c48e5cde9895a491d91c424eeeada3e134; version=2.6.32

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.0Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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.

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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