CVE-2022-2132Network attack vector

Guest traffic denial via multi-descriptor Vhost headers

Published Aug 31, 2022 · Updated Aug 3, 2024

Denial of service in DPDK 19.11, 20.11, and 21.11 vhost handling allows guest OS users to block other guests with crafted packets. The copy_desc_to_mbuf function assumes a Vhost header spans no more than two descriptors; a longer chain makes buf_avail approach 4 GB and allocates every mbuf. A malicious guest must submit the crafted descriptor chain through a DPDK vhost backend; exhaustion blocks traffic for other guests on the hypervisor.

CVSS severity8.6
High
EPSS probability2.22%
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 DPDK 19.11, 20.11, and 21.11 vhost handling allows guest OS users to block other guests with crafted packets. The copy_desc_to_mbuf function assumes a Vhost header spans no more than two descriptors; a longer chain makes buf_avail approach 4 GB and allocates every mbuf. A malicious guest must submit the crafted descriptor chain through a DPDK vhost backend; exhaustion blocks traffic for other guests on the hypervisor.

The record

CVE
CVE-2022-2132
Published
Aug 31, 2022
Updated
Aug 3, 2024
Vendor
DPDK Project
Product
DPDK
Classifications
CWE-791, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 31, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=dpdk 21.11, dpdk 20.11, dpdk 19.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DPDK Project · DPDKversion=dpdk 21.11, dpdk 20.11, dpdk 19.11

Published CVSS scores

8.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-791Incomplete Filtering of Special Elements
T1499.004Application or System Exploitation

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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