CVE-2025-70293
Publication date 26 August 2026
Last updated 6 October 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| u-boot | 26.04 LTS resolute |
Fixed 2025.10-0ubuntu2.1
|
| 24.04 LTS noble |
Fixed 2025.10-0ubuntu0.24.04.3
|
|
| 22.04 LTS jammy |
Fixed 2022.01+dfsg-2ubuntu2.8
|
|
| 20.04 LTS focal |
Fixed 2021.01+dfsg-3ubuntu0~20.04.6+esm1
|
|
| 18.04 LTS bionic |
Fixed 2020.10+dfsg-1ubuntu0~18.04.3+esm1
|
|
| 16.04 LTS xenial |
Not affected
|
|
| u-boot-nezha | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
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CVSS version: CVSS v3.0
Base score
9.8 · Critical
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8884-1
- U-Boot vulnerabilities
- 6 October 2026