CVE-2022-49722

Host crash via active-queue DMA teardown

Published Feb 26, 2025 · Updated Aug 5, 2026

Memory corruption in affected Linux kernel builds allows local users controlling an SR-IOV VF to crash the host during a VF reset. The ice PF driver treats a disabled VF as queue-free, allowing the VF driver to unmap RX/TX DMA resources while device queues remain active and continue writing packets into released memory. Exploitation requires delegated control of an SR-IOV VF and a reset or lifecycle operation; resulting corruption can expose host data, alter memory, or interrupt service.

CVSS severity7.8
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in affected Linux kernel builds allows local users controlling an SR-IOV VF to crash the host during a VF reset. The ice PF driver treats a disabled VF as queue-free, allowing the VF driver to unmap RX/TX DMA resources while device queues remain active and continue writing packets into released memory. Exploitation requires delegated control of an SR-IOV VF and a reset or lifecycle operation; resulting corruption can expose host data, alter memory, or interrupt service.

The record

CVE
CVE-2022-49722
Published
Feb 26, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.5
  2. Affected versionversion=ec4f5a436bdf0e5453ad15c4f34a59b9b675ff48 <1bb8253b1dd44cf004e12c333acc6f25ee286cf3
  3. Affected versionversion=ec4f5a436bdf0e5453ad15c4f34a59b9b675ff48 <efe41860008e57fb6b69855b4b93fdf34bc42798

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.5; version=ec4f5a436bdf0e5453ad15c4f34a59b9b675ff48 <1bb8253b1dd44cf004e12c333acc6f25ee286cf3; version=ec4f5a436bdf0e5453ad15c4f34a59b9b675ff48 <efe41860008e57fb6b69855b4b93fdf34bc42798

Published CVSS scores

7.8Linux kernel CVE teamCVSS:3.1/AV:L/AC:L/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.

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

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

CWE-787Out-of-bounds Write
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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