CVE-2024-27078

Kernel memory exhaustion via incomplete allocation cleanup

Published May 1, 2024 · Updated May 12, 2026

Memory leak in the Linux kernel V4L2 test-pattern generator allows local users to exhaust kernel memory through allocation failures. The tpg_alloc function returns immediately when a looped vzalloc call fails, leaving buffers from earlier iterations allocated because cleanup occurred only after successful allocation. Reaching the flaw requires local access to a V4L2 path that invokes the test-pattern generator, and repeated failures can degrade availability without affecting data confidentiality or integrity.

CVSS severity5.5
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory leak in the Linux kernel V4L2 test-pattern generator allows local users to exhaust kernel memory through allocation failures. The tpg_alloc function returns immediately when a looped vzalloc call fails, leaving buffers from earlier iterations allocated because cleanup occurred only after successful allocation. Reaching the flaw requires local access to a V4L2 path that invokes the test-pattern generator, and repeated failures can degrade availability without affecting data confidentiality or integrity.

The record

CVE
CVE-2024-27078
Published
May 1, 2024
Updated
May 12, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-401, CWE-20, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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=3.18; version=63881df94d3ecbb0deafa0b77da62ff2f32961c4 <0de691ff547d86dd54c24b40a81f9c925df8dd77; version=63881df94d3ecbb0deafa0b77da62ff2f32961c4 <31096da07933598da8522c54bd007376fb152a09; version=63881df94d3ecbb0deafa0b77da62ff2f32961c4 <4c86c772fef06f5d7a66151bac42366825db0941; version=63881df94d3ecbb0deafa0b77da62ff2f32961c4 <622b1cf38521569869c8f7b9fbe9e4f1a289add7; version=63881df94d3ecbb0deafa0b77da62ff2f32961c4 <6bf5c2fade8ed53b2d26fa9875e5b04f36c7145d; version=63881df94d3ecbb0deafa0b77da62ff2f32961c4 <770a57922ce36a8476c43f7400b6501c554ea511; version=63881df94d3ecbb0deafa0b77da62ff2f32961c4 <8269ab16415f2065cd792c49b0475543936cbd79; version=63881df94d3ecbb0deafa0b77da62ff2f32961c4 <8cf9c5051076e0eb958f4361d50d8b0c3ee6691c; version=63881df94d3ecbb0deafa0b77da62ff2f32961c4 <94303a06e1852a366e9671fff46d19459f88cb28

Published CVSS scores

8.8Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
5.5NIST NVDCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-401Missing Release of Memory after Effective Lifetime
CWE-20Improper Input Validation
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo