CVE-2022-49687

Local driver warning via stale XDP registration

Published Feb 26, 2025 · Updated May 11, 2026

Improper XDP receive-queue handling in Linux allows local users to trigger a virtio_net driver warning after suspend and resume. The virtnet_freeze() path frees receive queues without unregistering xdp_rxq_info, while virtnet_restore() rebuilds them without registering it again. The sequence requires an active virtio_net interface, host suspend and resume, and later interface shutdown; the published reproducer documents a warning, not a crash.

CVSS severity7.1
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper XDP receive-queue handling in Linux allows local users to trigger a virtio_net driver warning after suspend and resume. The virtnet_freeze() path frees receive queues without unregistering xdp_rxq_info, while virtnet_restore() rebuilds them without registering it again. The sequence requires an active virtio_net interface, host suspend and resume, and later interface shutdown; the published reproducer documents a warning, not a crash.

The record

CVE
CVE-2022-49687
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 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=4.16
  2. Affected versionversion=754b8a21a96d5f11712245aef907149606b323ae <340fbdc8011f2dc678f622c5ce1cbb5ab8305de7
  3. Affected versionversion=754b8a21a96d5f11712245aef907149606b323ae <57ee40f1b198b59d43c216fbc4672f9300d3c8b0
  4. Affected versionversion=754b8a21a96d5f11712245aef907149606b323ae <8af52fe9fd3bf5e7478da99193c0632276e1dfce
  5. Affected versionversion=754b8a21a96d5f11712245aef907149606b323ae <8c7a32b7c15555beddc5810c3334d9cefff061bf
  6. Affected versionversion=754b8a21a96d5f11712245aef907149606b323ae <8d7fe9ad6fddc2af8bde4b921b4f8fab231ed38c
  7. Affected versionversion=754b8a21a96d5f11712245aef907149606b323ae <9222672fa6370f0ec3d899662cb8680e9282fc4c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.16; version=754b8a21a96d5f11712245aef907149606b323ae <340fbdc8011f2dc678f622c5ce1cbb5ab8305de7; version=754b8a21a96d5f11712245aef907149606b323ae <57ee40f1b198b59d43c216fbc4672f9300d3c8b0; version=754b8a21a96d5f11712245aef907149606b323ae <8af52fe9fd3bf5e7478da99193c0632276e1dfce; version=754b8a21a96d5f11712245aef907149606b323ae <8c7a32b7c15555beddc5810c3334d9cefff061bf; version=754b8a21a96d5f11712245aef907149606b323ae <8d7fe9ad6fddc2af8bde4b921b4f8fab231ed38c; version=754b8a21a96d5f11712245aef907149606b323ae <9222672fa6370f0ec3d899662cb8680e9282fc4c

Published CVSS scores

5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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.

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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

No sourced classifications are available.

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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