CVE-2024-42268

Service interruption via unlocked mlx5 reload notification

Published Aug 17, 2024 · Updated May 11, 2026

Improper locking in Linux kernel mlx5 drivers allows local users to interrupt service through a synchronized device reload. The mlx5_sync_reset_reload_work path calls devlink_remote_reload_actions_performed() without holding the devlink lock, causing devlink_notify() to hit its lock assertion. Reachability requires local low-privileged access, an mlx5 device, and a synchronized reset while a remote host updates reload actions.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in Linux kernel mlx5 drivers allows local users to interrupt service through a synchronized device reload. The mlx5_sync_reset_reload_work path calls devlink_remote_reload_actions_performed() without holding the devlink lock, causing devlink_notify() to hit its lock assertion. Reachability requires local low-privileged access, an mlx5 device, and a synchronized reset while a remote host updates reload actions.

The record

CVE
CVE-2024-42268
Published
Aug 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 2024CVE 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=6.0
  2. Affected versionversion=84a433a40d0ebf3bbf36b8bfa58c6f45dc782344 <091268f3c27a5b6d7858a3bb2a0dbcc9cd26ddb5
  3. Affected versionversion=84a433a40d0ebf3bbf36b8bfa58c6f45dc782344 <572f9caa9e7295f8c8822e4122c7ae8f1c412ff9
  4. Affected versionversion=84a433a40d0ebf3bbf36b8bfa58c6f45dc782344 <5d07d1d40aabfd61bab21115639bd4f641db6002
  5. Affected versionversion=84a433a40d0ebf3bbf36b8bfa58c6f45dc782344 <98884e89c90d077f6fe6ba18e6cf6f914642f04e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0; version=84a433a40d0ebf3bbf36b8bfa58c6f45dc782344 <091268f3c27a5b6d7858a3bb2a0dbcc9cd26ddb5; version=84a433a40d0ebf3bbf36b8bfa58c6f45dc782344 <572f9caa9e7295f8c8822e4122c7ae8f1c412ff9; version=84a433a40d0ebf3bbf36b8bfa58c6f45dc782344 <5d07d1d40aabfd61bab21115639bd4f641db6002; version=84a433a40d0ebf3bbf36b8bfa58c6f45dc782344 <98884e89c90d077f6fe6ba18e6cf6f914642f04e

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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.

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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

CWE-667Improper Locking
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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