CVE-2024-35936

System availability loss via unhandled btrfs lookup

Published May 19, 2024 · Updated May 12, 2026

Denial of service in the Linux kernel btrfs relocation code allows local users to cause an unspecified system availability failure. btrfs_relocate_sys_chunks() treats a failed inexact chunk-tree search as an impossible condition instead of returning the lookup error. A low-privilege local user must reach system-chunk relocation on a corrupted btrfs filesystem; no confidentiality or integrity impact is reported.

CVSS severity5.5
Medium
EPSS probability0.23%
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

Denial of service in the Linux kernel btrfs relocation code allows local users to cause an unspecified system availability failure. btrfs_relocate_sys_chunks() treats a failed inexact chunk-tree search as an impossible condition instead of returning the lookup error. A low-privilege local user must reach system-chunk relocation on a corrupted btrfs filesystem; no confidentiality or integrity impact is reported.

The record

CVE
CVE-2024-35936
Published
May 19, 2024
Updated
May 12, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-237, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 19, 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=2.6.29; version=2b82032c34ec40515d3c45c36cd1961f37977de8 <0d23b34c68c46cd225b55868bc8a269e3134816d; version=2b82032c34ec40515d3c45c36cd1961f37977de8 <1f9212cdbd005bc55f2b7422e7b560d9c02bd1da; version=2b82032c34ec40515d3c45c36cd1961f37977de8 <36c2a2863bc3896243eb724dc3fd4cf9aea633f2; version=2b82032c34ec40515d3c45c36cd1961f37977de8 <576164bd01bd795f8b09fb194b493103506b33c9; version=2b82032c34ec40515d3c45c36cd1961f37977de8 <7411055db5ce64f836aaffd422396af0075fdc99; version=2b82032c34ec40515d3c45c36cd1961f37977de8 <87299cdaae757f3f41212146cfb5b3af416b8385; version=2b82032c34ec40515d3c45c36cd1961f37977de8 <bebd9e0ff90034875c5dfe4bd514fd7055fc7a89; version=2b82032c34ec40515d3c45c36cd1961f37977de8 <d1ffa4ae2d591fdd40471074e79954ec45f147f7

Published CVSS scores

5.5CanonicalCVSS: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.

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-237Improper Handling of Structural Elements
T1499.004Application or System Exploitation

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