CVE-2022-48789Network attack vector

Remote kernel compromise via NVMe/TCP recovery race

Published Jul 16, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel NVMe/TCP host allows remote attackers to corrupt kernel memory through a connected NVMe target. nvme_tcp_submit_async_event_work can queue asynchronous-event I/O while error recovery tears down the admin queue because recovery does not flush the pending work first. Exploitation requires an established NVMe/TCP controller session; the race enables kernel reads, writes, code execution, panic, or hang.

CVSS severity9.8
Critical
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel NVMe/TCP host allows remote attackers to corrupt kernel memory through a connected NVMe target. nvme_tcp_submit_async_event_work can queue asynchronous-event I/O while error recovery tears down the admin queue because recovery does not flush the pending work first. Exploitation requires an established NVMe/TCP controller session; the race enables kernel reads, writes, code execution, panic, or hang.

The record

CVE
CVE-2022-48789
Published
Jul 16, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 16, 2024CVE 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3f2304f8c6d6ed97849057bd16fee99e434ca796 <5e42fca37ccc76f39f73732661bd47254cad5982
  2. Affected versionversion=3f2304f8c6d6ed97849057bd16fee99e434ca796 <61a26ffd5ad3ece456d74c4c79f7b5e3f440a141
  3. Affected versionversion=3f2304f8c6d6ed97849057bd16fee99e434ca796 <bb0d8fb35c4ff00a503c2c4dca4cce8d102a21c4
  4. Affected versionversion=3f2304f8c6d6ed97849057bd16fee99e434ca796 <e192184cf8bce8dd55d619f5611a2eaba996fa05
  5. Affected versionversion=3f2304f8c6d6ed97849057bd16fee99e434ca796 <ff9fc7ebf5c06de1ef72a69f9b1ab40af8b07f9e
  6. Affected versionversion=5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3f2304f8c6d6ed97849057bd16fee99e434ca796 <5e42fca37ccc76f39f73732661bd47254cad5982; version=3f2304f8c6d6ed97849057bd16fee99e434ca796 <61a26ffd5ad3ece456d74c4c79f7b5e3f440a141; version=3f2304f8c6d6ed97849057bd16fee99e434ca796 <bb0d8fb35c4ff00a503c2c4dca4cce8d102a21c4; version=3f2304f8c6d6ed97849057bd16fee99e434ca796 <e192184cf8bce8dd55d619f5611a2eaba996fa05; version=3f2304f8c6d6ed97849057bd16fee99e434ca796 <ff9fc7ebf5c06de1ef72a69f9b1ab40af8b07f9e; version=5.0

Published CVSS scores

7.8Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.8Linux Kernel CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.4SUSECVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS: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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1499.004Application or System Exploitation

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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