CVE-2024-50265

Kernel crash via repeated OCFS2 entry removal

Published Nov 19, 2024 · Updated May 11, 2026

NULL-pointer dereference in Linux OCFS2 allows local users to crash the kernel by removing an extended attribute under memory pressure. In ocfs2_xa_remove(), an ENOMEM path lets ocfs2_xa_cleanup_value_truncate() delete the entry, then incorrectly calls ocfs2_xa_remove_entry() on it again. The path requires local access to a mounted OCFS2 filesystem and a failed value truncation; the observed consequence is a kernel null-pointer fault and service interruption.

CVSS severity5.5
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL-pointer dereference in Linux OCFS2 allows local users to crash the kernel by removing an extended attribute under memory pressure. In ocfs2_xa_remove(), an ENOMEM path lets ocfs2_xa_cleanup_value_truncate() delete the entry, then incorrectly calls ocfs2_xa_remove_entry() on it again. The path requires local access to a mounted OCFS2 filesystem and a failed value truncation; the observed consequence is a kernel null-pointer fault and service interruption.

The record

CVE
CVE-2024-50265
Published
Nov 19, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 19, 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=2.6.34
  2. Affected versionversion=399ff3a748cf4c8c853e96dd477153202636527b <0b63c0e01fba40e3992bc627272ec7b618ccaef7
  3. Affected versionversion=399ff3a748cf4c8c853e96dd477153202636527b <168a9b8303fcb0317db4c06b23ce1c0ce2af4e10
  4. Affected versionversion=399ff3a748cf4c8c853e96dd477153202636527b <2b5369528ee63c88371816178a05b5e664c87386
  5. Affected versionversion=399ff3a748cf4c8c853e96dd477153202636527b <38cbf13b2e7a31362babe411f7c2c3c52cd2734b
  6. Affected versionversion=399ff3a748cf4c8c853e96dd477153202636527b <6a7e6dcf90fe7721d0863067b6ca9a9442134692
  7. Affected versionversion=399ff3a748cf4c8c853e96dd477153202636527b <86dd0e8d42828923c68ad506933336bcd6f2317d
  8. Affected versionversion=399ff3a748cf4c8c853e96dd477153202636527b <dcc8fe8c83145041cb6c80cac21f6173a3ff0204
  9. Affected versionversion=399ff3a748cf4c8c853e96dd477153202636527b <dd73c942eed76a014c7a5597e6926435274d2c4c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.34; version=399ff3a748cf4c8c853e96dd477153202636527b <0b63c0e01fba40e3992bc627272ec7b618ccaef7; version=399ff3a748cf4c8c853e96dd477153202636527b <168a9b8303fcb0317db4c06b23ce1c0ce2af4e10; version=399ff3a748cf4c8c853e96dd477153202636527b <2b5369528ee63c88371816178a05b5e664c87386; version=399ff3a748cf4c8c853e96dd477153202636527b <38cbf13b2e7a31362babe411f7c2c3c52cd2734b; version=399ff3a748cf4c8c853e96dd477153202636527b <6a7e6dcf90fe7721d0863067b6ca9a9442134692; version=399ff3a748cf4c8c853e96dd477153202636527b <86dd0e8d42828923c68ad506933336bcd6f2317d; version=399ff3a748cf4c8c853e96dd477153202636527b <dcc8fe8c83145041cb6c80cac21f6173a3ff0204; version=399ff3a748cf4c8c853e96dd477153202636527b <dd73c942eed76a014c7a5597e6926435274d2c4c

Published CVSS scores

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

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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-476NULL Pointer Dereference
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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