CVE-2024-50148

Kernel crash via duplicate BNEP protocol cleanup

Published Nov 7, 2024 · Updated May 12, 2026

Incomplete cleanup in the Linux kernel BNEP module allows local users to crash the kernel during failed initialization and module removal. bnep_init ignores a bnep_sock_init failure after that function releases socket resources, so bnep_sock_cleanup later unregisters the same protocol state and reaches wild memory in proto_unregister. Reachability requires bnep_sock_init to fail and the BNEP module to be removed; the published trace shows rmmod running as UID 0.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incomplete cleanup in the Linux kernel BNEP module allows local users to crash the kernel during failed initialization and module removal. bnep_init ignores a bnep_sock_init failure after that function releases socket resources, so bnep_sock_cleanup later unregisters the same protocol state and reaches wild memory in proto_unregister. Reachability requires bnep_sock_init to fail and the BNEP module to be removed; the published trace shows rmmod running as UID 0.

The record

CVE
CVE-2024-50148
Published
Nov 7, 2024
Updated
May 12, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-459, T1529
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 7, 2024CVE publishedPublication date reported by the CVE source.
  2. May 12, 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=0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <03015b6329e6de42f03ec917c25c4cf944f81f66; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <20c424bc475b2b2a6e0e2225d2aae095c2ab2f41; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2c439470b23d78095a0d2f923342df58b155f669; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <64a90991ba8d4e32e3173ddd83d0b24167a5668c; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6c151aeb6dc414db8f4daf51be072e802fae6667; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d10cd7bf574ead01fae140ce117a11bcdacbe6a8; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e232728242c4e98fb30e4c6bedb6ba8b482b6301; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fa58e23ea1359bd24b323916d191e2e9b4b19783; version=2.6.12

Published CVSS scores

5.5CISACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Siemens ProductCERTCVSS: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-459Incomplete Cleanup
T1529System Shutdown/Reboot

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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