CVE-2024-50092

Misleading kernel diagnostics via zero-length userdata chunk

Published Nov 5, 2024 · Updated May 11, 2026

Improper warning handling in Linux netconsole 6.9 through 6.11.3 allows local users to generate misleading kernel diagnostics. In drivers/net/netconsole.c, write_ext_msg treats a zero-length userdata chunk as an error and calls WARN_ON_ONCE even though deferred transmission is valid. Reaching the condition requires local low-privileged access and insufficient buffer space; it produces a warning rather than losing userdata or interrupting service.

CVSS severity3.3
Low
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper warning handling in Linux netconsole 6.9 through 6.11.3 allows local users to generate misleading kernel diagnostics. In drivers/net/netconsole.c, write_ext_msg treats a zero-length userdata chunk as an error and calls WARN_ON_ONCE even though deferred transmission is valid. Reaching the condition requires local low-privileged access and insufficient buffer space; it produces a warning rather than losing userdata or interrupting service.

The record

CVE
CVE-2024-50092
Published
Nov 5, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 5, 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=1ec9daf950936c2a1c591596e83c09ce2eb12ade <712a3af3710263444217df54e7f337f99df198d2
  2. Affected versionversion=1ec9daf950936c2a1c591596e83c09ce2eb12ade <d94785bb46b6167382b1de3290eccc91fa98df53
  3. Affected versionversion=6.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1ec9daf950936c2a1c591596e83c09ce2eb12ade <712a3af3710263444217df54e7f337f99df198d2; version=1ec9daf950936c2a1c591596e83c09ce2eb12ade <d94785bb46b6167382b1de3290eccc91fa98df53; version=6.9

Published CVSS scores

3.3CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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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