CVE-2024-47670

Kernel memory access via malformed OCFS2 xattrs

Published Oct 9, 2024 · Updated Aug 5, 2026

Out-of-bounds access in Linux OCFS2 from 2.6.28 allows local users to trigger unsafe kernel memory access via a crafted image. ocfs2_xattr_find_entry() trusts the on-disk xattr count while advancing entry pointers and fails to stop at the valid xattr memory region. The crafted OCFS2 image must be mounted and an extended-attribute lookup must scan it; the public advisory does not establish a specific crash, disclosure, or code-execution outcome.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in Linux OCFS2 from 2.6.28 allows local users to trigger unsafe kernel memory access via a crafted image. ocfs2_xattr_find_entry() trusts the on-disk xattr count while advancing entry pointers and fails to stop at the valid xattr memory region. The crafted OCFS2 image must be mounted and an extended-attribute lookup must scan it; the public advisory does not establish a specific crash, disclosure, or code-execution outcome.

The record

CVE
CVE-2024-47670
Published
Oct 9, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=2.6.28
  2. Affected versionversion=cf1d6c763fbcb115263114302485ad17e7933d87 <1f6e167d6753fe3ea493cdc7f7de8d03147a4d39
  3. Affected versionversion=cf1d6c763fbcb115263114302485ad17e7933d87 <34759b7e4493d7337cbc414c132cef378c492a2c
  4. Affected versionversion=cf1d6c763fbcb115263114302485ad17e7933d87 <5bbe51eaf01a5dd6fb3f0dea81791e5dbc6dc6dd
  5. Affected versionversion=cf1d6c763fbcb115263114302485ad17e7933d87 <60c0d36189bad58b1a8e69af8781d90009559ea1
  6. Affected versionversion=cf1d6c763fbcb115263114302485ad17e7933d87 <8e7bef408261746c160853fc27df3139659f5f77
  7. Affected versionversion=cf1d6c763fbcb115263114302485ad17e7933d87 <9b32539590a8e6400ac2f6e7cf9cbb8e08711a2f
  8. Affected versionversion=cf1d6c763fbcb115263114302485ad17e7933d87 <9e3041fecdc8f78a5900c3aa51d3d756e73264d6
  9. Affected versionversion=cf1d6c763fbcb115263114302485ad17e7933d87 <b49a786beb11ff740cb9e0c20b999c2a0e1729c2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.28; version=cf1d6c763fbcb115263114302485ad17e7933d87 <1f6e167d6753fe3ea493cdc7f7de8d03147a4d39; version=cf1d6c763fbcb115263114302485ad17e7933d87 <34759b7e4493d7337cbc414c132cef378c492a2c; version=cf1d6c763fbcb115263114302485ad17e7933d87 <5bbe51eaf01a5dd6fb3f0dea81791e5dbc6dc6dd; version=cf1d6c763fbcb115263114302485ad17e7933d87 <60c0d36189bad58b1a8e69af8781d90009559ea1; version=cf1d6c763fbcb115263114302485ad17e7933d87 <8e7bef408261746c160853fc27df3139659f5f77; version=cf1d6c763fbcb115263114302485ad17e7933d87 <9b32539590a8e6400ac2f6e7cf9cbb8e08711a2f; version=cf1d6c763fbcb115263114302485ad17e7933d87 <9e3041fecdc8f78a5900c3aa51d3d756e73264d6; version=cf1d6c763fbcb115263114302485ad17e7933d87 <b49a786beb11ff740cb9e0c20b999c2a0e1729c2

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

No sourced classifications are available.

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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