CVE-2025-70290 Affecting u-boot package, versions <2021.01+dfsg-3ubuntu0~20.04.6+esm1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published7 Oct 2026
- disclosed26 Aug 2026
Introduced: 26 Aug 2026
CVE-2025-70290 (opens in a new tab)How to fix?
Upgrade Ubuntu:20.04 u-boot to version 2021.01+dfsg-3ubuntu0~20.04.6+esm1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream u-boot package and not the u-boot package as distributed by Ubuntu.
See How to fix? for Ubuntu:20.04 relevant fixed versions and status.
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.