CVE-2022-3625

System crash via stale devlink parameter callbacks

Published Oct 21, 2022 · Updated Aug 3, 2024

Use-after-free in Linux kernel devlink allows local users with network-device admin access to crash the system after a failed reload. A failed devlink reload leaves parameters registered, so get or set operations invoke callbacks that access freed mlxsw ACL-region data. Reaching the callbacks requires administrative control of an affected network device; the bounded impacts are system crash and kernel-context code execution.

CVSS severity7.8
High
EPSS probability0.33%
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 Linux kernel devlink allows local users with network-device admin access to crash the system after a failed reload. A failed devlink reload leaves parameters registered, so get or set operations invoke callbacks that access freed mlxsw ACL-region data. Reaching the callbacks requires administrative control of an affected network device; the bounded impacts are system crash and kernel-context code execution.

The record

CVE
CVE-2022-3625
Published
Oct 21, 2022
Updated
Aug 3, 2024
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-119, CWE-416, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 21, 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?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=n/a

Published CVSS scores

4.6UbuntuCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
4.6VulDB CNACVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0Amazon LinuxCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-416Use After Free
T1068Exploitation for Privilege Escalation

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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