CVE-2025-70293
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductU-Boot
PublishedAug 26, 2026
First seenAug 26, 2026
Weakness typeCWE-190Integer overflowCWE-122CWE-122
How to fix
Update
- Denx U-Boot2026.04 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Denx U-Boot | No range specified | 2026.04 |
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