VulnerabilityDeferred

CVE-2025-70290

An integer overflow vulnerability in the ZFS filesystem support can be triggered by malformed on-disk metadata.

CRITICAL 9.8EPSS 0.46%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.46%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

An issue was discovered in Denx U-Boot before 2026.04. An integer overflow vulnerability in the ZFS filesystem support can be triggered by malformed on-disk metadata. The issue may result in incorrect memory allocation followed by out-of-bounds memory access, potentially leading to a crash or arbitrary code execution during the boot process.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.46% probability · 39th percentile
CISA KEV: Not listed
Weakness: CWE-190, CWE-787
Source: cve@mitre.org

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.