CVE-2024-57259

Code execution via undersized SquashFS path allocation

Published Feb 18, 2025 · Updated Nov 3, 2025

Heap memory corruption in U-Boot before 2025.01-rc1 allows physically proximate attackers to execute code via crafted SquashFS data. sqfs_search_dir allocates res for the remaining path and symlink target plus only the terminator, then concatenates an uncounted slash and writes one byte past the heap buffer. Exploitation requires modification of filesystem data available to the bootloader and can bypass a verified-boot chain of trust.

CVSS severity7.1
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap memory corruption in U-Boot before 2025.01-rc1 allows physically proximate attackers to execute code via crafted SquashFS data. sqfs_search_dir allocates res for the remaining path and symlink target plus only the terminator, then concatenates an uncounted slash and writes one byte past the heap buffer. Exploitation requires modification of filesystem data available to the bootloader and can bypass a verified-boot chain of trust.

The record

CVE
CVE-2024-57259
Published
Feb 18, 2025
Updated
Nov 3, 2025
Vendor
DENX Software Engineering GmbH
Product
U-Boot
Classifications
CWE-193, T1542
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record 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=0 <2025.01-rc1

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

DENX Software Engineering GmbH · U-Bootversion=0 <2025.01-rc1

Published CVSS scores

7.1MITRECVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
6.8NIST NVDCVSS:3.1/AV:P/AC:L/PR:N/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.

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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-193Off-by-one Error
T1542Pre-OS Boot

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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