An issue was discovered in Denx U-Boot before 2026.04. (CVE-2025-70293)
Description
An integer overflow vulnerability exists in Denx U-Boot before version 2026.04 in the ext4fs_get_bgdtable function. This flaw causes an underallocation of a buffer used in a memcpy operation, potentially allowing arbitrary code execution, denial of service, or other impacts. The vulnerability has a critical CVSS score of 9.8. No patch or remediation details are currently provided.
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Denx U-Boot versions prior to 2026.04 contain an integer overflow vulnerability in the ext4fs_get_bgdtable function. The vulnerability arises from incorrect size calculation leading to underallocation of a buffer. This underallocated buffer is subsequently used in a memcpy call, which can result in memory corruption. Exploitation may lead to arbitrary code execution, denial of service, or other unspecified impacts. The vulnerability is tracked as CVE-2025-70293 and has a CVSS 3.1 base score of 9.8, indicating critical severity. There is no information about available patches or fixes at this time.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary code, cause a denial of service, or trigger other unspecified impacts due to memory corruption from the underallocated buffer in the memcpy operation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-jgm9-xpcw-hqh9
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-70293"]
- State
- PUBLISHED
Threat ID: 6a905423acd9273b49698800
Added to database: 08/27/2026, 15:13:39 UTC
Last enriched: 09/08/2026, 14:22:05 UTC
Last updated: 10/10/2026, 06:48:14 UTC
Views: 30
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