CVE-2024-53685

System-wide denial of service via overlong path

Published Jan 11, 2025 · Updated May 11, 2026

Denial of service in the Linux kernel CephFS client allows local users to make most of a machine unusable through an overlong path. ceph_mdsc_build_path repeatedly retries when a constructed full path exceeds PATH_MAX instead of rejecting the excessive length, indefinitely blocking the calling task. Reachability requires an active CephFS client and local access capable of causing path construction; the documented consequence is broad loss of machine usability.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel CephFS client allows local users to make most of a machine unusable through an overlong path. ceph_mdsc_build_path repeatedly retries when a constructed full path exceeds PATH_MAX instead of rejecting the excessive length, indefinitely blocking the calling task. Reachability requires an active CephFS client and local access capable of causing path construction; the documented consequence is broad loss of machine usability.

The record

CVE
CVE-2024-53685
Published
Jan 11, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-835, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 11, 2025CVE 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

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=2.6.34
  2. Affected versionversion=9030aaf9bf0a1eee47a154c316c789e959638b0f <0f2b2d9e881c90402dbe28f9ba831775b7992e1f
  3. Affected versionversion=9030aaf9bf0a1eee47a154c316c789e959638b0f <550f7ca98ee028a606aa75705a7e77b1bd11720f
  4. Affected versionversion=9030aaf9bf0a1eee47a154c316c789e959638b0f <99a37ab76a315c8307eb5b0dc095d8ad9d8efeaa
  5. Affected versionversion=9030aaf9bf0a1eee47a154c316c789e959638b0f <c47ed91156daf328601d02b58d52d9804da54108
  6. Affected versionversion=9030aaf9bf0a1eee47a154c316c789e959638b0f <d42ad3f161a5a487f81915c406f46943c7187a0a
  7. Affected versionversion=9030aaf9bf0a1eee47a154c316c789e959638b0f <e4b168c64da06954be5d520f6c16469b1cadc069

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.34; version=9030aaf9bf0a1eee47a154c316c789e959638b0f <0f2b2d9e881c90402dbe28f9ba831775b7992e1f; version=9030aaf9bf0a1eee47a154c316c789e959638b0f <550f7ca98ee028a606aa75705a7e77b1bd11720f; version=9030aaf9bf0a1eee47a154c316c789e959638b0f <99a37ab76a315c8307eb5b0dc095d8ad9d8efeaa; version=9030aaf9bf0a1eee47a154c316c789e959638b0f <c47ed91156daf328601d02b58d52d9804da54108; version=9030aaf9bf0a1eee47a154c316c789e959638b0f <d42ad3f161a5a487f81915c406f46943c7187a0a; version=9030aaf9bf0a1eee47a154c316c789e959638b0f <e4b168c64da06954be5d520f6c16469b1cadc069

Published CVSS scores

5.5Amazon LinuxCVSS: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-835Loop with Unreachable Exit Condition ('Infinite Loop')
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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