CVE-2024-51729

Memory corruption via unaligned gigantic-page copy

Published Jan 11, 2025 · Updated Aug 5, 2026

Out-of-bounds write in the huge-page copy path in affected Linux kernels allows local users to corrupt memory via a page fault. hugetlb_wp() passes an unaligned fault address through copy_user_large_folio() to copy_user_gigantic_page(), which requires huge-page alignment. Reachability requires a low-privileged local user to trigger write protection on a gigantic hugetlb page; the resulting miscopy can corrupt memory or disclose kernel data.

CVSS severity7.8
High
EPSS probability0.21%
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 write in the huge-page copy path in affected Linux kernels allows local users to corrupt memory via a page fault. hugetlb_wp() passes an unaligned fault address through copy_user_large_folio() to copy_user_gigantic_page(), which requires huge-page alignment. Reachability requires a low-privileged local user to trigger write protection on a gigantic hugetlb page; the resulting miscopy can corrupt memory or disclose kernel data.

The record

CVE
CVE-2024-51729
Published
Jan 11, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 11, 2025CVE 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=530dd9926dc16220d2fae0997f45cda94f5f0864 <cb12d61361ce769672c7c7bd32107252598cdd8b
  2. Affected versionversion=530dd9926dc16220d2fae0997f45cda94f5f0864 <f5d09de9f1bf9674c6418ff10d0a40cfe29268e1
  3. Affected versionversion=6.11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=530dd9926dc16220d2fae0997f45cda94f5f0864 <cb12d61361ce769672c7c7bd32107252598cdd8b; version=530dd9926dc16220d2fae0997f45cda94f5f0864 <f5d09de9f1bf9674c6418ff10d0a40cfe29268e1; version=6.11

Published CVSS scores

7.8NIST NVDCVSS: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

CWE-787Out-of-bounds Write

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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