CVE-2024-56630

Service interruption via leaked inode reference

Published Dec 27, 2024 · Updated May 11, 2026

Resource leak in Linux kernel OCFS2 allows local users to cause a service interrupt through a failed inode initialization path. When new_inode() succeeds but dquot_initialize() fails, ocfs2_get_init_inode() returns without calling iput(), leaving a busy inode after unmount. Reaching the error path requires local low-privileged access to an OCFS2 filesystem; the documented consequence is unreleased inode state and availability loss.

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

Resource leak in Linux kernel OCFS2 allows local users to cause a service interrupt through a failed inode initialization path. When new_inode() succeeds but dquot_initialize() fails, ocfs2_get_init_inode() returns without calling iput(), leaving a busy inode after unmount. Reaching the error path requires local low-privileged access to an OCFS2 filesystem; the documented consequence is unreleased inode state and availability loss.

The record

CVE
CVE-2024-56630
Published
Dec 27, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 2024CVE 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

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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=4.3
  2. Affected versionversion=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <03db61c43c8e2729896fda6b9a95c7fb5c875c20
  3. Affected versionversion=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <67c2c6d0564ca05348ba4f8f6eaf7a0713f56c15
  4. Affected versionversion=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <911fcc95b530615b484e8920741fc5e4bc4e684a
  5. Affected versionversion=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <965b5dd1894f4525f38c1b5f99b0106a07dbb5db
  6. Affected versionversion=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <9c19ea59965ebb482e227532f7bbb01792fb028c
  7. Affected versionversion=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <a84d507d3290aca249b44ae992af9e10590cc5f6
  8. Affected versionversion=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <c5327720a4655303ffa3f632d86ee205dd783f32

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.3; version=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <03db61c43c8e2729896fda6b9a95c7fb5c875c20; version=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <67c2c6d0564ca05348ba4f8f6eaf7a0713f56c15; version=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <911fcc95b530615b484e8920741fc5e4bc4e684a; version=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <965b5dd1894f4525f38c1b5f99b0106a07dbb5db; version=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <9c19ea59965ebb482e227532f7bbb01792fb028c; version=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <a84d507d3290aca249b44ae992af9e10590cc5f6; version=9c89fe0af826bfff36d8019ea6fd78db09b3c478 <c5327720a4655303ffa3f632d86ee205dd783f32

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Oracle 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.

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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-908Use of Uninitialized Resource
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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