CVE-2024-26935

Service interruption via leaked SCSI procfs directories

Published May 1, 2024 · Updated May 23, 2026

Resource exhaustion in the Linux SCSI core allows local users to interrupt service by leaking procfs host-directory entries. In drivers/scsi/hosts.c, scsi_host_dev_release() fails to remove the procfs directory when a host is allocated but scsi_add_host() never succeeds. Reaching the flaw requires local access and a failing USB mass-storage probe through the raw-gadget path; repeated triggers consume kernel resources and can interrupt service.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in the Linux SCSI core allows local users to interrupt service by leaking procfs host-directory entries. In drivers/scsi/hosts.c, scsi_host_dev_release() fails to remove the procfs directory when a host is allocated but scsi_add_host() never succeeds. Reaching the flaw requires local access and a failing USB mass-storage probe through the raw-gadget path; repeated triggers consume kernel resources and can interrupt service.

The record

CVE
CVE-2024-26935
Published
May 1, 2024
Updated
May 23, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-770, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=2a764d55e938743efa7c2cba7305633bcf227f09 <cea234bb214b17d004dfdccce4491e6ff57c96ee; version=5.10.176 <5.10.215; version=5.15.104 <5.15.154; version=5.4.238 <5.4.274; version=6.1.21 <6.1.84; version=6.2.8 <6.3; version=6.3; version=68c665bb185037e7eb66fb792c61da9d7151e99c <5c2386ba80e779a92ec3bb64ccadbedd88f779b1; version=73f030d4ef6d1ad17f824a0a2eb637ef7a9c7d51; version=7e0ae8667fcdd99d1756922e1140cac75f5fa279 <3678cf67ff7136db1dd3bf63c361650db5d92889; version=88c3d3bb6469cea929ac68fd326bdcbefcdfdd83 <0053f15d50d50c9312d8ab9c11e2e405812dfcac; version=be03df3d4bfe7e8866d4aa43d62e648ffe884f5f <d4c34782b6d7b1e68d18d9549451b19433bd4c6c; version=be03df3d4bfe7e8866d4aa43d62e648ffe884f5f <e293c773c13b830cdc251f155df2254981abc320; version=be03df3d4bfe7e8866d4aa43d62e648ffe884f5f <f23a4d6e07570826fe95023ca1aa96a011fa9f84; version=be03df3d4bfe7e8866d4aa43d62e648ffe884f5f <f4ff08fab66eb5c0b97e1a24edac052fb40bf5d7

Published CVSS scores

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-770Allocation of Resources Without Limits or Throttling
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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