CVE-2025-70293

State: Published
Severity: 9.8 Critical
Published: Aug 26, 2026
Updated: Sep 1, 2026
Reserved: Jan 9, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-190 Integer Overflow or Wraparound
CWE-122 Heap-based Buffer Overflow

Affected Products

Product	Versions
n/an/a	n/aAffected

References

http://u-boot.com/
http://denx.com/
https://gist.github.com/c0zy1/4d9648d10a5ff07bda2771ea1298e469

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