CVE-2022-50441

Kernel crash via uncanceled delayed bond work

Published Oct 1, 2025 · Updated Oct 1, 2025

NULL pointer dereference in net/mlx5 LAG in Linux 6.1 through 6.1.4 allows local users to crash the kernel during bond teardown. The LAG teardown path destroys its workqueue without first calling cancel_delayed_work_sync(), allowing queued bond work to access the destroyed queue. Low-privileged local access and an mlx5 bond configuration are required; successful triggering causes a kernel oops and service interruption.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in net/mlx5 LAG in Linux 6.1 through 6.1.4 allows local users to crash the kernel during bond teardown. The LAG teardown path destroys its workqueue without first calling cancel_delayed_work_sync(), allowing queued bond work to access the destroyed queue. Low-privileged local access and an mlx5 bond configuration are required; successful triggering causes a kernel oops and service interruption.

The record

CVE
CVE-2022-50441
Published
Oct 1, 2025
Updated
Oct 1, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 2025Record 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=0d4e8ed139d871fcb2844dd71075997753baeec8 <4d1c1379d71777ddeda3e54f8fc26e9ecbfd1009
  2. Affected versionversion=0d4e8ed139d871fcb2844dd71075997753baeec8 <8f1b8b3133504bf9125ee507ddcc3a8fb41a41f0
  3. Affected versionversion=6.1
  4. Affected versionversion=ff24a802204620214afa75a5e64280f40015e399 <5df57bb04e91add52fb67e226209df9a17f06a89

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0d4e8ed139d871fcb2844dd71075997753baeec8 <4d1c1379d71777ddeda3e54f8fc26e9ecbfd1009; version=0d4e8ed139d871fcb2844dd71075997753baeec8 <8f1b8b3133504bf9125ee507ddcc3a8fb41a41f0; version=6.1; version=ff24a802204620214afa75a5e64280f40015e399 <5df57bb04e91add52fb67e226209df9a17f06a89

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5SUSECVSS: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-476NULL Pointer Dereference

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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