Description
An issue was discovered in Denx U-Boot before 2026.04. An integer overflow vulnerability exists in function ext4fs_get_bgdtable, the size calculation can lead to under allocation and this underallocated buffer will be used in memcpy() which could lead to arbitrary code execution, a denial of service, or other unspecified impacts.
Published: 2026-08-26
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 02 Sep 2026 08:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 02 Sep 2026 07:00:00 +0000

Type Values Removed Values Added
Title Integer Overflow in Denx U-Boot ext4fs_get_bgdtable Allows Arbitrary Code Execution

Wed, 02 Sep 2026 00:45:00 +0000

Type Values Removed Values Added
Title Integer Overflow in ext4fs_get_bgdtable Leading to Arbitrary Code Execution in Denx U‑Boot
Weaknesses CWE-787

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-122
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Wed, 26 Aug 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Denx
Denx u-boot
Vendors & Products Denx
Denx u-boot

Wed, 26 Aug 2026 21:15:00 +0000

Type Values Removed Values Added
Title Integer Overflow in ext4fs_get_bgdtable Leading to Arbitrary Code Execution in Denx U‑Boot
Weaknesses CWE-190
CWE-787

Wed, 26 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Description An issue was discovered in Denx U-Boot before 2026.04. An integer overflow vulnerability exists in function ext4fs_get_bgdtable, the size calculation can lead to under allocation and this underallocated buffer will be used in memcpy() which could lead to arbitrary code execution, a denial of service, or other unspecified impacts.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-01T18:25:43.647Z

Reserved: 2026-01-09T00:00:00.000Z

Link: CVE-2025-70293

cve-icon Vulnrichment

Updated: 2026-09-01T18:25:37.903Z

cve-icon NVD

Status : Received

Published: 2026-08-26T20:16:59.697

Modified: 2026-09-01T19:17:18.393

Link: CVE-2025-70293

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T06:45:05Z

Weaknesses